Boundaries

In this paper we introduce a method for partial description of the Poisson boundary for a certain class of groups acting on a segment. As an application we ﬁnd among the groups of subexponential growth those that admit nonconstant bounded harmonic functions with respect to some symmetric (inﬁnitely supported) measure µ of ﬁnite entropy H(µ). This implies that the entropy h(µ) of the corresponding random walk is (ﬁnite and) positive. As another application we exhibit certain discontinuity for the recurrence property of random walks. ...
29p tuanloccuoi 04012013 23 6 Download

In this paper, we prove global second derivative estimates for solutions of the Dirichlet problem for the MongeAmp`re equation when the inhomogee neous term is only assumed to be H¨lder continuous. As a consequence of our o approach, we also establish the existence and uniqueness of globally smooth solutions to the second boundary value problem for the aﬃne maximal surface equation and aﬃne mean curvature equation.
38p dontetvui 17012013 24 5 Download

Annals of Mathematics We study the motion of an incompressible perfect liquid body in vacuum. This can be thought of as a model for the motion of the ocean or a star. The free surface moves with the velocity of the liquid and the pressure vanishes on the free surface. This leads to a free boundary problem for Euler’s equations, where the regularity of the boundary enters to highest order. We prove local existence in Sobolev spaces assuming a “physical condition”, related to the fact that the pressure of a ﬂuid has to be positive. ...
87p noel_noel 17012013 25 4 Download

BOUNDARY BEHAVIOR OF LEADERS ORGANIZATION: DEFINITION AND SCALE DEVELOPMENT My test of parental valuations requires data describing the distribution of peer groups and outcomes across schools within housing markets that differ in the amount of Tiebout choice. I describe first my measure of market structure, defined over districtlevel enrollment.
233p mualan_mualan 25022013 39 4 Download

Conodont fossils belonging to Frasnian/Famennian (F/F) boundary interval have been discovered within several geologic sections in Vietnam, including Ngoc Lam, Xom Nha (Quang Binh), Kang Ka Pass, Nguom Kim Pass (Cao Bang), Noong De Pass (Nghe An), and Si Phai Pass, Ma Pi Len Pass (Ha Giang). However, the F/F boundary with both the linguiformis and triangularis conodont zones that bracket the boundary has only been identified at Si Phai Pass and Xom Nha Mountain.
8p dem_thanh 22122012 14 3 Download

Tham khảo sách 'boundary value problems, sixth edition: and partial differential equations', giáo dục  đào tạo, cao đẳng  đại học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả
515p muathu_102 28012013 23 3 Download

In this work, we introduce the TESLACELAB metric (Translation Evaluation of Sentences with Linearprogrammingbased Analysis – Characterlevel Evaluation for Languages with Ambiguous word Boundaries) for automatic machine translation evaluation. For languages such as Chinese where words usually have meaningful internal structure and word boundaries are often fuzzy, TESLACELAB acknowledges the advantage of characterlevel evaluation over wordlevel evaluation.
9p nghetay_1 07042013 14 2 Download

Sentence boundary detection in speech is important for enriching speech recognition output, making it easier for humans to read and downstream modules to process. In previous work, we have developed hidden Markov model (HMM) and maximum entropy (Maxent) classiﬁers that integrate textual and prosodic knowledge sources for detecting sentence boundaries.
8p bunbo_1 17042013 20 2 Download

An approach to automatic detection of syllable boundaries is presented. We demonstrate the use of several manually constructed grammars trained with a novel algorithm combining the advantages of treebank and bracketed corpora training. We investigate the effect of the training corpus size on the performance of our system. The evaluation shows that a handwritten grammar performs better on ﬁnding syllable boundaries than does a treebank grammar.
8p bunrieu_1 18042013 21 2 Download

Most NLP applications work under the assumption that a user input is errorfree; thus, word segmentation (WS) for written languages that use word boundary markers (WBMs), such as spaces, has been regarded as a trivial issue. However, noisy realworld texts, such as blogs, emails, and SMS, may contain spacing errors that require correction before further processing may take place. For the Korean language, many researchers have adopted a traditional WS approach, which eliminates all spaces in the user input and reinserts proper word boundaries. ...
4p hongphan_1 15042013 12 1 Download

This paper describes a novel instancebased sentence boundary determination method for natural language generation that optimizes a set of criteria based on examples in a corpus. Compared to existing sentence boundary determination approaches, our work offers three signiﬁcant contributions. First, our approach provides a general domain independent framework that effectively addresses sentence boundary determination by balancing a comprehensive set of sentence complexity and quality related constraints.
8p bunbo_1 17042013 19 1 Download

This paper talks about the deciding practical sense boundary of homonymous words. The important problem in dictionaries or thesauri is the confusion of the sense boundary by each resource. This also becomes a bottleneck in the practical language processing systems. This paper proposes the method about discovering sense boundary using the collocation from the large corpora and the clustering methods. In the experiments, the proposed methods show the similar results with the sense boundary from a corpusbased dictionary and sensetagged corpus. ...
4p bunbo_1 17042013 24 1 Download

Chinese sentences are written with no special delimiters such as space to indicate word boundaries. Existing Chinese NLP systems therefore employ preprocessors to segment sentences into words. Contrary to the conventional wisdom of separating this issue from the task of sentence understanding, we propose an integrated model that performs word boundary identification in lockstep with sentence understanding. In this approach, there is no distinction between rules for word boundary identification and rules for sentence understanding. These two functions are combined. ...
3p bunmoc_1 20042013 23 1 Download

This article outlines a new method of locating discourse boundaries based on lexical cohesion and a graphical technique called dotplotting. The application of dotplotting to discourse segmentation can be performed either manually, by examining a graph, or automatically, using an optimization algorithm. The results of two experiments involving automatically locating boundaries between a series of concatenated documents are presented. Areas of application and future directions for this work are also outlined. Introduction In general, texts are "about" some topic. ...
3p bunmoc_1 20042013 12 1 Download

You may find that other grammars recognise different word classes from the ones listed here. They may also define the boundaries between the classes in different ways. In some grammars, for instance, pronouns are treated as a separate word class, whereas we treat them as a subclass of nouns. A difference like this should not cause confusion. Instead, it highlights an important principle in grammar, known as GRADIENCE. This refers to the fact that the boundaries between the word classes are not absolutely fixed.
98p thequang 07072009 618 312 Download

The analysis model of a structure includes nodes (joints), elements and boundary conditions. Finite elements are used in data entry, representing members of the structure for numerical analysis, and nodes define the locations of such members. Boundary conditions represent the status of connections between the structure and neighboring structures such as foundations. A structural analysis refers to mathematical simulations of a numerical analysis model of a structure.
316p muahong54 12052013 51 26 Download

Ancillary list: * Online SSM http://www.elsevierdirect.com/product.jsp?isbn=9780123747198 * Online ISM http://textbooks.elsevier.com/web/manuals.aspx?isbn=9780123747198 * Companion site, Ebook http://www.elsevierdirect.com/companion.jsp?ISBN=9780123747198 * SSM for 5e http://www.elsevierdirect.com/product.
473p kennybibo 14072012 51 10 Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Exact Multiplicity of Positive Solutions for a Class of SecondOrder TwoPoint Boundary Problems with Weight Function
16p sting06 13022012 27 8 Download

Boundaries of Rock Mechanics. Recent Advances and Challenges for the 21st Century contains 180 papers from the International Young Scholars’ Symposium on Rock Mechanics 2008 (Beijing, China, 28 April2 May 2008). The symposium was organized by the ISRM Commission on Education, and sponsored by the International Society for Rock Mechanics (ISRM) and the Chinese Society for Rock Mechanics and Engineering (CSRME).
0p cronus75 14012013 40 8 Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: vResearch Article ¨ On Coupled KleinGordonSchrodinger Equations with Acoustic Boundary Conditions
23p sting06 13022012 35 7 Download