Process variants

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  • This title includes: Origins and development: The process, The first twenty years; Development after 1955; Principles: Equipment, Joint preparation and welding procedure; Welding conditions; Special techniques; Weld defects; Process variants: Single electrode welding; Multiple electrode welding; Metal powder additions; Narrow gap submerged-arc welding; Consumables: Types of flux and their development; Wires; Flux/wire combination; Consumables for different steel types; Flux delivery system; Welding procedures: Welding costs; Establishing a procedure; Procedural options; Application and uses...

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  • Since 1904, ESAB has been a pioneer in the welding and cutting business. By continuously improving and developing our products and methods, we meet the challenges of technological advance in every sector we operate in. Our focus on quality issues has always been strong. Quality is an ongoing process that is at the heart of all our production processes and facilities worldwide. With world leadership comes worldwide applications experience and expertise.

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  • It is suggested in this paper that t w o - l e v e l morphology theory (Kay, Koskenniemi) can be extended to include morphological tone. This extension treats phonological features as I/O tapes for Finite State Transducers in a parallel sequential incrementation (PSI) architecture; phonological processes (e.g. assimilation) are seen as variants of an elementary unification operation over feature tapes (linear unification phonology, LUP).

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  • We discuss text summarization in terms of maximum coverage problem and its variant. We explore some decoding algorithms including the ones never used in this summarization formulation, such as a greedy algorithm with performance guarantee, a randomized algorithm, and a branch-andbound method. On the basis of the results of comparative experiments, we also augment the summarization model so that it takes into account the relevance to the document cluster.

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  • This guide has been prepared to assist welding personnel with the preparation of welding procedures required as part of their company certification to CSA Standards W47.1, W47.2 and W186. The following three documents will be described: (a) Welding Engineering Standards (Note: Only required for W47.2) (b) Welding Procedure Specifications c) Welding Procedure Data Sheets There will be a brief description of the first two documents; however, this guide will focus on the preparation of welding procedure data sheets.

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  • In recent years, there has been a paradigm shift in learning, specifically the manner in which information is gathered and ingested. This is particularly no- table in subject matter that covers great breadth or is rapidly evolving, such as medicine, and more specifically, diagnostic imaging. Students and residents (and for that matter, practicing radiologists) quickly turn to the Internet to “Google™” unknown factoids, rapidly gathering information, in many cases without source validation.

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  • This paper discusses research on distinguishing word meanings in the context of information retrieval systems. We conducted experiments with three sources of evidence for making these distinctions: morphology, part-of-speech, and phrases. We have focused on the distinction between h o m o n y m y and polysemy (unrelated vs. related meanings). Our results support the need to distinguish h o m o n y m y and p o l y semy. We found: 1) grouping morphological variants makes a significant improvement in retrieval performance, 2) that more than half of all words in a dictionary that differ...

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  • We describe a simple variant of the interpolated Markov model with non-emitting state transitions and prove that it is strictly more powerful than any Markov model. Empirical results demonstrate that the non-emitting model outperforms the interpolated model on the Brown corpus and on the Wall Street Journal under a wide range of experimental conditions. The nonemitting model is also much less prone to overtraining. The remainder of our article consists of four sections.

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  • Discrete Wavelet Transform is a wavelet (DWT) transform that is widely used in numerical and functional analysis. Its key advantage over more traditional transforms, such as the Fourier transform, lies in its ability to offer temporal resolution, i.e. it captures both frequency and location (or time) information.

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  • It has been previously reported that the structure of a human pancreatic ribonuclease variant, namely PM8, constitutes a dimer by the exchange of an N-terminal domain, although in an aqueous solution it is found mainly as a monomer. First, we investigated the solution conditions that favour the dimerization of this variant.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài: "Distinct signal transduction processes by IL-4 and IL-13 and influences from the Q551R variant of the human IL-4 receptor alpha chain...

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  • Carcinogenesis covers molecular, biochemical and cellular processes that underpin this field. The complex nature of cancer means that a broad understanding of these processes is advantageous when designing novel preventative, therapeutic or diagnostic strategies. This book commences with chapters discussing cancer predisposition and pre-cancerous lesions. Factors that initiate or progress cancer development, including viral, hormonal, oncogenic and biochemical stimuli are then described, as are interactions with the cancer extracellular environment....

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  • In recent years, a considerable amount of research has been focused on estab-lishing the epigenetic mechanisms associated with DNA and the core histones. This effort is driven by the fact that epigenetics is intimately involved with genomics in a whole range of molecular processes. However, there is now a consensus that the epigenetics of the linker histones are just as important.

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  • In two cycles of an error-prone PCR process, variants of formate dehy-drogenase from Candida boidiniiwere created which revealed an up to 4.4-fold (440%) higher residual activity after entrapment in polyacrylamide gels than the wild-type enzyme. These were identified in an assay using sin-gle precursor molecules of polyacrylamide instead of the complete gel for selection.

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  • Recent research suggests that minor changes in the primary sequence of the conserved histones may become major determinants for the chromatin structure regulating gene expression and other DNA-related processes. An analysis of the involvement of different core histone variants in different nuclear processes and the structure of different variant nucleosome cores shows that this may indeed be so. Histone variants may also be involved in demarcating functional regions of the chromatin.

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  • Ever since Woods's "What's in a Link" paper, there has been a growing concern for formalization in the study of knowledge representation. Several arguments have been made that frame representation languages and semantic-network languages are syntactic variants of the ftrst-order predicate calculus (FOPC). The typical argument proceeds by showing how any given frame or network representation can be mapped to a logically isomorphic FOPC representation.

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  • The syntactic analysis of languages with respect to Government-binding (GB) grammar is a problem that has received relatively little attention until recently. This paper describes an attribute grammar specification of the Government-binding theory. The paper focuses on the description of the attribution rules responsible for determining antecedent-trace relations in phrase-structure trees, and on some theoretical implications of those rules for the G B model.

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  • This paper describes a novel approach to generate potential foreign-accented phonetic transcriptions using phonological rewrite rules. For each pair of a native language (Li) and a target language (L2), a set of postlexical rules is designed to transform canonical phonetic dictionaries of L2 into adapted dictionaries for native Li speakers. Some general considerations on the design of such a rule-based system are presented.

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  • We introduce a new approach to transitionbased dependency parsing in which the parser does not directly construct a dependency structure, but rather an undirected graph, which is then converted into a directed dependency tree in a post-processing step. This alleviates error propagation, since undirected parsers do not need to observe the single-head constraint. Undirected parsers can be obtained by simplifying existing transition-based parsers satisfying certain conditions.

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  • ProteinN-arginine methyltransferases (PRMTs) participate in a number of cellular processes, including cell growth, nuclear⁄cytoplasmic protein shut-tling, differentiation, RNA splicing and post-transcriptional regulation. PRMT2 (also known as HRMT1L1) is clearly involved in lung function, the inflammatory response

    pdf20p cosis54 08-12-2012 8 1   Download

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