Constant Stress Accelerated Life Test: Different Methods of Estimation Under the Exponentiated Power Lindley Distribution

Strength of Materials - Accelerated life testing has been used frequently in several fields as it provides an economical way for obtaining failure time data rapidly or in a shorter time as compared...     

A robust software watermarking framework using shellcode

Multimedia Tools and Applications - Watermarks have long been applied to ensure the authenticity of media contents. Computer software is an intellectual outcome in the digital domain. Therefore, it...     

Online Delay Estimation and Adaptive Compensation in Wireless Networked System: An Embedded Control Design

International Journal of Control, Automation and Systems - In the present work, an embedded PI controller is designed for speed regulation of DC servomotor over a wireless network. The embedded...     

gold-MUSIC Based DOA Estimation and Multiuser Detection of DS-CDMA System with Optimal Beamformer ULA Antenna

Wireless Personal Communications - gold-MUSIC based direction of arrival (DOA) estimation and multiuser detection (MUD) overcoming near–far problem are achieved concurrently for...     

The Impact of Social Media on Consumers’ Acculturation and Purchase Intentions

Social media has emerged as a significant and effective means of assisting and endorsing activities and communications among peers, consumers and organizations that outdo the restrictions of time and space. While the previous studies acknowledge the role of agents of culture change, it largely remains silent on the role of social media in influencing acculturation outcomes and consumption choices. This study uses self-administered questionnaire to collect data from 514 Turkish-Dutch respondents and examines how their use of social media affects their acculturation and consumption choices. This research makes a significant contribution to consumer acculturation research by showing that social media is a vital means of culture change and a driver of acculturation strategies and consumption choices. This study is the first to investigate the role of social media as an agent of culture change in terms of how it impacts acculturation and consumption. The paper discusses implications for theory development and for practice.     

Multi-level image thresholding using Otsu and chaotic bat algorithm

Multi-level thresholding is a helpful tool for several image segmentation applications. Evaluating the optimal thresholds can be applied using a widely adopted extensive scheme called Otsu’s thresholding. In the current work, bi-level and multi-level threshold procedures are proposed based on their histogram using Otsu’s between-class variance and a novel chaotic bat algorithm (CBA). Maximization of between-class variance function in Otsu technique is used as the objective function to obtain the optimum thresholds for the considered grayscale images. The proposed procedure is applied on a standard test images set of sizes (512 × 512) and (481 × 321). Further, the proposed approach performance is compared with heuristic procedures, such as particle swarm optimization, bacterial foraging optimization, firefly algorithm and bat algorithm. The evaluation assessment between the proposed and existing algorithms is conceded using evaluation metrics, namely root-mean-square error, peak signal to noise ratio, structural similarity index, objective function, and CPU time/iteration number of the optimization-based search. The results established that the proposed CBA provided better outcome for maximum number cases compared to its alternatives. Therefore, it can be applied in complex image processing such as automatic target recognition.

     

Social group optimization for global optimization of multimodal functions and data clustering problems

Neural Computing and Applications - Cost and physical constraints in the engineering applied problems obligate finding the best results that global optimization algorithms cannot realize. For...     

A first principle approach toward circuit level modeling of electrically doped gated diode from single wall thymine nanotube-like structure

Microsystem Technologies - This article presents a circuit level representation from gated diode which is developed from Thymine single wall nanotube-like structure using density functional theory...     

Neural perceptron & strict lossless secret sharing oriented cryptographic science: fostering patients’ security in the “new normal” COVID-19 E-Health

Multimedia Tools and Applications - Patients’ data security is an open challenge on any telemedicine system. The challenge has been extended enough in this unprecedented corona virus led...     

Modification of polyethersulphone induced by high energy proton,C+, and Ne6+ ions: A spectroscopic study

Polyethersulphone (PES) was irradiated with 4 MeV proton, 3.6 MeV C⁺, and 145 MeV Ne⁶⁺ ions at different ion fluences. The linear energy transfer dependence on ion‐induced spectral changes was analyzed by ultraviolet–visible, Fourier transform infrared spectroscopy and fluorescence spectroscopy. The gradual red shift with the increase in optical absorption was observed in the region of 350–500 nm for proton and 400–800 nm for C⁺ and Ne⁶⁺ ions irradiated PES. The gradual shift in absorption may be attributed to the formation of carbonaceous clusters. The gradual decrease in optical band gap indicates increase in cluster sizes. When PES was irradiated with protons, loss in fluorescence emission intensity at 440 nm was observed, although there was no change in spectral shape. In contrast, C⁺ and Ne⁶⁺ ion irradiated PES showed blue shift with concomitant loss in intensity and the formation of new peak at 575 nm. In fact, heavier ions are found to be more effective in inducing physicochemical modifications in PES. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 1591–1597, 2006