Results 291 to 300 of about 1,281,795 (323)

Effect of compression casting method on the compressive strength, elastic modulus and microstructure of rubber concrete

, 2020
Recycling rubber in the production of structural concrete is not considered a feasible option due to a significant reduction in the strength and elastic modulus of concrete.
Yufei Wu, S. Kazmi, M. Munir, Yingwu Zhou, F. Xing   +4 more
semanticscholar   +1 more source

Compressive beamforming

The Journal of the Acoustical Society of America, 2014
Sound source localization with sensor arrays involves the estimation of the direction-of-arrival (DOA) from a limited number of observations. Compressive sensing (CS) solves such underdetermined problems achieving sparsity, thus improved resolution, and can be solved efficiently with convex optimization.
Angeliki, Xenaki, Peter, Gerstoft, Klaus, Mosegaard   +2 more
openaire   +2 more sources

Effects of chemical composition of fly ash on compressive strength of fly ash cement mortar

Construction and Building Materials, 2019
The effect of the chemical composition of the amorphous and crystalline phases of fly ash on the compressive strength of fly ash cement mortar was studied. The fly ash cement mortars were made by replacing 25 wt% of cement with 16 types of fly ashes, and
Young-keun Cho, Sanghwa Jung, Y. Choi
semanticscholar   +1 more source

Compressive sensing: To compress or not to compress

2011 Conference Record of the Forty Fifth Asilomar Conference on Signals, Systems and Computers (ASILOMAR), 2011
In this paper, we consider the compressive sensing scheme from the information theory point of view and derive the lower bound of the probability of error for CS when length N of the information vector is large. The result has been shown that, for an i.i.d.
Davis Kirachaiwanich, Qilian Liang
openaire   +1 more source

Compression bandaging

Nursing Standard, 2001
This article discusses the different techniques that should be used for compression bandaging.
openaire   +4 more sources

Highly compressible paracetamol — II. Compression properties

International Journal of Pharmaceutics, 2000
Paracetamol particles crystallized in the presence of polyvinylpyrrolidone (PVP) exhibited an obvious improvement in their compression properties compared to untreated paracetamol. Paracetamol particles crystallized in the presence of 0.5% w/v PVP 10000 or PVP 50000 produced tablets with improved crushing strength with no tendency to cap even at high ...
H A, Garekani, J L, Ford, M H, Rubinstein, A R, Rajabi-Siahboomi   +3 more
openaire   +2 more sources

An image compression and encryption algorithm based on chaotic system and compressive sensing

Optics and Laser Technology, 2019
For a linear image encryption system, it is vulnerable to the chosen-plaintext attack. To overcome the weakness and reduce the correlation among pixels of the encryption image, an effective image compression and encryption algorithm based on chaotic ...
L. Gong, Kaide Qiu, Chen-Wei Deng, Nanrun Zhou   +3 more
semanticscholar   +1 more source

Predicting the compressive strength of silica fume concrete using hybrid artificial neural network with multi-objective grey wolves

Journal of Cleaner Production, 2018
The use of silica fume as a partial replacement for Ordinary Portland Cement provides a wide variety of benefits such as reduced pressure on natural resources, reduced CO2 footprint, and improved mechanical and durability properties. Compressive strength
A. Behnood, E. Golafshani
semanticscholar   +1 more source

Meso-scale modelling of the size effect on dynamic compressive failure of concrete under different strain rates

International Journal of Impact Engineering, 2019
Great progresses have been made in static size effect of concrete, while almost no efforts have been conducted in dynamic size effect of concrete. The macro nonlinearity and size effect of concrete should be attributed to the inner heterogeneities ...
Liu Jin, Wenxuan Yu, Xiu-li Du, Shuai Zhang, Dong Li   +4 more
semanticscholar   +1 more source

Modeling the compressive strength of high-strength concrete: An extreme learning approach

Construction and Building Materials, 2019
Compressive strength is a major and significant mechanical property of concrete which is considered as one of the important parameters in many design codes and standards. Early and accurate estimation of it can save in time and cost.
A. K. Al-Shamiri, Joon-Hoon Kim, Tian-Feng Yuan, Y. Yoon   +3 more
semanticscholar   +1 more source