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124 results on '"Islam, R"'

2. An Accurate System for Prostate Cancer Localization from Diffusion-Weighted MRI

Author

Ayman El-Baz, Robert S. Keynton, Mohammed Elmogy, Mohamed Abou El-Ghar, Mohammed Ghazal, Islam R. Abdelmaksoud, Ahmed Shalaby, and Ahmed Aboulfotouh

Subjects
Level set (data structures), Level set method, Computer science, business.industry, Pattern recognition, CAD, computer.software_genre, Convolutional neural network, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Feature (computer vision), Voxel, 030220 oncology & carcinogenesis, Effective diffusion coefficient, Artificial intelligence, business, computer, Diffusion MRI
Abstract

This paper proposes a computer-aided diagnosis (CAD) system for localizing prostate cancer from diffusion-weighted magnetic resonance imaging (DW-MRI). This system uses DW-MRI data sets that were acquired at four b-values: 100, 200, 300, and 400 smm −2. The first step in the proposed system is prostate segmentation using a level set method. The evolution of this level set is guided not only by the intensity of the prostate voxels but also the shape prior of the prostate and the voxels spatial relationships. The second step in the proposed system calculates the apparent diffusion coefficient (ADC) maps of the prostate regions as a discriminating feature between malignant and healthy cases. These ADC maps are used in the last step of the CAD system to fine-tune a pretrained convolutional neural network (CNN) to identify the ADC maps with malignant tumors. The accuracy of the proposed system was evaluated using 40% of the ADC maps while the other 60% are used to fine-tune the pretrained CNN model. The proposed CAD system resulted in an average area under the curve (AUC) of 0.95 at the four b-values.

Published
2019

6. A study on offset drift with temperature of MEMS inertial sensors

Author

Thamatam, Nipun, primary, John, J., additional, Sridhara, Sandilya, additional, Prakash, K. Veda, additional, Jambhalikar, Ashwini, additional, Giridhar, M. S., additional, Islam, R., additional, Saxena, Gaurav, additional, Thamarai, V., additional, Viswanathan, M., additional, and Agrawal, Anita B., additional

Published
2015
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7. Electromechanical-Metallurgical Probe Contact Wear Effects of PdCuAg Alloy in Cycling Contact With SAC 305 Solder: Semiconductor Test and Ball Grid Array Packaging.

Author

Martinez Sanchez, R., Garay, C. G., Islam, R., and Aguilar Santillan, J.

Subjects
ELECTRONIC appliance testing, ELECTRONIC probes, ELECTRONIC equipment, ELECTRONICS packaging, FLIP chip technology, MICROPROCESSORS, SURFACE mount technology
Abstract

The PdCuAg ternary system in the form of a rod was studied to understand its microstructure, structure analysis, and cycling wear effect while in electrical–mechanical contact with an interconnect solder material, e.g., SAC305. The conditions under test are simulating test probe manufacturing conditions of ~33 gf, 250–350 \mu \textm in a lineal z height displacement and ~1 A of current. This paper’s results show that solid-state diffusion from its material processing leads to microstructure solute pool segregations that in turn accelerate its wear. It is manifested in electrical degradation with high contact resistance. Ag-solute segregated microstructure produces early reliability electrical failures >100~\textm\Omega . Results suggest a binary data correlation of the microstructure as 25% Ag “free” last only ~25 kHz versus 1% Ag “free” last 80 kHz. A detailed discussion of how to optimize its metallurgical microstructure for improving mechanical and electrical reliability properties are discussed throughout this paper. [ABSTRACT FROM PUBLISHER]

Published
2018
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9. Enabling electromagnetic applications of negative-refractive-index transmission-line metamaterials part II

Author

Eleftheriades, G. V., Antoniades, Marcos A., Islam, R., and Antoniades, Marcos A. [0000-0002-9699-2387]

Subjects
Antenna feeders, Parallel feds, Phase-shifting, Electromagnetic applications, Metamaterial antennas, Refractive index, Physics::Optics, Design frequencies, Binary trees, Negative refractive index transmission lines, Series-fed arrays, Metamaterials, Feed networks, Broadside arrays, Antenna arrays, Phase shift
Abstract

The 1-Dimensional (1-D) metamaterial phase-shifting lines presented in [1] can be used to develop compact and broadband, non-radiating, metamaterial feed-networks for antenna arrays. These can be used to replace conventional TL-based feed-networks, which can be bulky and narrowband. For series-fed arrays, the proposed metamaterial feed-networks have the advantage of being compact in size, therefore eliminating the need for conventional TL meander lines. In addition, the metamaterial feed-networks are more broadband when compared to conventional TL feed-networks, which enables series-fed broadside arrays to experience less beam squint when operated away from the design frequency. For parallel-fed arrays, the proposed metamaterial feed-networks have the potential to significantly reduce the size of the feed networks by completely collapsing the traditionally used TL-based binary tree feed-network. © 2004 IEEE.

Published
2004

13. Next generation Intel

Author

Islam, R, primary, Sabbavarapu, A, additional, Patel, R, additional, Kumar, M, additional, Nguyen, J, additional, Patel, B, additional, and Kontu, A, additional

Published
2010
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