Document Categorization Based on Minimum Loss of Reconstruction Information

Use of A Domain-Specific Ontology to Support Automated Document Categorization at the Concept Level: Method Development and Evaluation

Expert Systems with Applications ◽

10.1016/j.eswa.2021.114681 ◽

2021 ◽

pp. 114681

Author(s):

Yen-Hsien Lee ◽

Paul Jen-Hwa Hu ◽

Wan-Jung Tsao ◽

Liang Li

Keyword(s):

Method Development ◽

Domain Specific ◽

Document Categorization ◽

Level Method

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Coactivation of Delayed-Action Vulcanization. Part I. Polymeric, Nonmigratory Cure Coactivators for Accelerated Sulfur Vulcanization

Rubber Chemistry and Technology ◽

10.5254/1.3536286 ◽

1989 ◽

Vol 62 (5) ◽

pp. 957-972

Author(s):

A. Y. Coran ◽

F. Ignatz-Hoover ◽

L. H. Davis

Keyword(s):

Molecular Weight ◽

Minimum Loss ◽

Synthetic Rubber ◽

Curing Characteristics ◽

Sulfur Vulcanization ◽

Delayed Action ◽

Very High ◽

Rubber Article

Abstract Rubbery vinylpyridine-butadiene copolymers, containing 20–65% by weight of vinylpyridine monomer units, are effective coactivators of vulcanization for TBBS-accelerated sulfur-vulcanized SBR. In addition to emulsion SBR, the new co-activator has been evaluated in copositions of solution SBR, BR, NR, and various blends. The co-activator is active in all of the compositions which contain butadiene-derived synthetic rubber. This includes blends such as SBR/BR, solution-SBR/BR, SBR/NR, BR/NR, SBR/BR/NR, etc. There is little or no activity in which NR is the only polymer. The most efficacious copolymers contain between 30 and 60% 2-vinylpyridine. The incorporation of such a copolymer into an unvulcanized butadiene-derived rubber mix can give a substantial increase in the rate of crosslink formation with only a minimum loss of scorch resistance. Since the polymeric coactivators are very high in molecular weight, it can be at least tentatively concluded that they will not migrate from one component stock to another in a built-up multi-stock rubber article, either before or during vulcanization. Since the curing characteristics of a vinylpyridine-copolymer-containing TBBS-accelerated stock can be similar to those of TBBS-accelerated NR, it might be concluded that the new additives will solve some of the problems in balancing the cures of adjacent NR and SBR stocks in a multicomponent cured rubber article.

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On-line identification of minimum-loss pulse patterns for resonant link converters

IEEE Transactions on Aerospace and Electronic Systems ◽

10.1109/7.705925 ◽

1998 ◽

Vol 34 (3) ◽

pp. 1037-1043

Author(s):

G. Marola

Keyword(s):

Minimum Loss ◽

Line Identification ◽

On Line

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A minimum-loss robust scheme for torque control of induction motors

CCECE 2003 - Canadian Conference on Electrical and Computer Engineering. Toward a Caring and Humane Technology (Cat. No.03CH37436) ◽

10.1109/ccece.2003.1226395 ◽

2004 ◽

Author(s):

R.J.A. Ganesh ◽

J.E. Quaicoe ◽

R. Venkatesan

Keyword(s):

Induction Motors ◽

Torque Control ◽

Minimum Loss

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Numerical Investigation of the Solidity Effect on Linear Compressor Cascades

Volume 2A: Turbomachinery ◽

10.1115/gt2014-25532 ◽

2014 ◽

Cited By ~ 1

Author(s):

J. Sans ◽

M. Resmini ◽

J.-F. Brouckaert ◽

S. Hiernaux

Keyword(s):

Numerical Investigation ◽

State Of The Art ◽

Leading Edge ◽

Operating Conditions ◽

Compressor Cascade ◽

Minimum Loss ◽

Low Speed ◽

High Mach ◽

The Stability ◽

The Impact

Solidity in compressors is defined as the ratio of the aerodynamic chord over the peripheral distance between two adjacent blades, the pitch. This parameter is simply the inverse of the pitch-to-chord ratio generally used in turbines. Solidity must be selected at the earliest design phase, i.e. at the level of the meridional design and represents a crucial step in the whole design process. Most of the existing studies on this topic rely on low-speed compressor cascade correlations from Carter or Lieblein. The aim of this work is to update those correlations for state-of-the-art controlled diffusion blades, and extend their application to high Mach number flow regimes more typical of modern compressors. Another objective is also to improve the physical understanding of the solidity effect on compressor performance and stability. A numerical investigation has been performed using the commercial software FINE/Turbo. Two different blade profiles were selected and investigated in the compressible flow regime as an extension to the low-speed data on which the correlations are based. The first cascade uses a standard double circular arc profile, extensively referenced in the literature, while the second configuration uses a state-of-the-art CDB, representative of low pressure compressor stator mid-span profile. Both profiles have been designed with the same inlet and outlet metal angles and the same maximum thickness but the camber and thickness distributions, the stagger angle and the leading edge geometry of the CDB have been optimized. The determination of minimum loss, optimum incidence and deviation is addressed and compared with existing correlations for both configurations and various Mach numbers that have been selected in order to match typical booster stall and choke operating conditions. The emphasis is set on the minimum loss performance at mid-span. The impact of the solidity on the operating range and the stability of the cascade are also studied.

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