Results 261 to 270 of about 333,820 (286)

A Non-Uniform Digital Filter Bank Hearing Aid for Aged People with Hearing Disability

2021
A hearing once lost cannot be regained naturally. One of the solutions to this problem is using of Hearing Aids. In this paper we are mainly concentrating on the solution for hearing loss in aged people (presbycusis). High frequencies are mainly affected in Presbycusis.
K. Ayyappa Swamy, C. Sushma, Zachariah C. Alex, S. Prathima   +3 more
openaire   +1 more source

A modified X-model of the oil-impregnated bushing including non-uniform thermal aging of cellulose insulation

Cellulose, 2020
The frequency domain spectroscopy (FDS) technique is widely used for the aging condition assessment of cellulose insulation on the bushing core. Generally, these assessment activities could be completed by the analysis of the FDS data between the laboratory sample and field bushing with the help of the traditional X-model.
Jiefeng Liu, Shichang Yang, Yiyi Zhang   +2 more
exaly   +2 more sources

Non-uniform ageing behavior of individual grain boundaries in ZnO varistor ceramics

Journal of the European Ceramic Society, 2011
Abstract In this paper, the ageing characteristics of individual grain boundaries in ZnO varistor ceramics were directly measured for the first time, which were carried out based on the microcontact technique in combination with accelerated AC voltage ageing tests.
Jinliang He, Jun Liu, Jun Hu, Rong Zeng, Wangcheng Long   +4 more
openaire   +1 more source

Current collector optimizer topology to extract maximum power from non-uniform aged PV array

Energy, 2020
Abstract Centralized inverter technology is one of the most common architectures of the PV installation, which interfaces a large number of PV panels that configured in series-parallel (SP) combination to the grid. However, the power generated from centralized inverter architecture based on SP array topology is significantly reduced under the non ...
Ahmed Refaat, Mohamed H Osman, Nikolay V Korovkin   +2 more
exaly   +2 more sources

Effect of temperature on burst phenomena in aged mineral oil under non-uniform fields

Canadian Electrical Engineering Journal, 1986
Presents the experimental results of high field conduction current burst phenomena in aged transformer oil using point-plane configuration. The effect of temperature and field strength variations on burst parameters are emphasized. It was found that bursts can be classified according to their direction. Generally, the amplitude of bursts increases with
Abdulaziz A. El-Sulaiman, Abobakr S. Ahmed, M. Iqbal Qureshi   +2 more
openaire   +1 more source

Study of DC conduction in aged transformer oil under non-uniform high fields

Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1983, 1983
This paper emphasises experimental results of DC conduction current in aged transformer oil using point-plane configuration. The effects of oil dehydration and filtration, anode material and field strength are investigated and discussed. It is found that i-t and i-E characteristics display exponential “behaviour and tunneling phenomenon, respectively ...
Abdulaziz A. El-Sulaiman, Abobakr S. Ahmed, M. Iqbal Qureshi   +2 more
openaire   +1 more source

Effect of Age on Strength of Unfired Soil Lime Bricks Containing Non Uniform Coconut Fibers

Applied Mechanics and Materials, 2013
In some provinces in Indonesia, like West Java, fired clay and unfired soil lime bricks co-exist as non standard bricks. Low rise buildings and rural houses in Indonesia are often constructed with non-standard bricks. The paper discusses strength-time relation of unfired bricks reinforced with and without natural fibers.
Heru Purnomo, R.G. Raka Basmara Putra, R. Mochammad Syaifulloh, Iwan Sulistyawan   +3 more
openaire   +1 more source

Enhanced age estimation by considering the areas of non-skin and the non-uniform illumination of visible light camera sensor

Expert Systems with Applications, 2016
We propose an age estimation method using a weighted MLBP based on fuzzy system.With two inputs, optimal weights are obtained by fuzzy system without training.Optimal weight is assigned to histogram features by MLBP method in each sub-block.Age is estimated by SVR based on the fusion of weighted MLBP and Gabor features.
Dat Tien Nguyen, Kang Ryoung Park
openaire   +1 more source

Influence of Non-Uniform Current Distribution on AC Transport Current Loss in Bi-2223/Ag Tapes

IEEE Transactions on Applied Superconductivity, 2006
This paper presents the influence of current distribution on AC transport current loss in multi-strand high-temperature superconductor (HTS) tapes. The current-distribution-dependent-AC loss is analyzed by introducing a current distribution parameter. We calculated AC loss of multi-strand HTS tapes numerically and performed AC loss measurements as well.
S. Choi, S.-J. Suh, W. Nah, Y.H. Ma, K.-W. Ryu, J.H. Kim, J. Joo, M.-H. Sohn, Y.-K. Kwon   +8 more
openaire   +1 more source

Non-uniform aging of cycled commercial LiFePO4//graphite cylindrical cells revealed by post-mortem analysis

Journal of Power Sources, 2014
Aging of power-optimized commercial 2.3 Ah cylindrical LiFePO4//graphite cells to be used in hybrid electric vehicle is investigated and compared for three different aging procedures; (i) using a s ...
Matilda Klett, Rickard Eriksson, Jens Groot, Pontus Svens, Katarzyna Ciosek Högström, Rakel Wreland Lindström, Helena Berg, Torbjörn Gustafson, Göran Lindbergh, Kristina Edström   +9 more
openaire   +1 more source