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Article
Publication date: 9 February 2021

U. Rajashekhar, D. Neelappa and L. Rajesh

This work proposes classification of two-class motor imagery electroencephalogram signals using different automated machine learning algorithms. Here data are decomposed into…

137

Abstract

Purpose

This work proposes classification of two-class motor imagery electroencephalogram signals using different automated machine learning algorithms. Here data are decomposed into various frequency bands identified by wavelet transform and will span the range of 0–30 Hz.

Design/methodology/approach

Statistical measures will be applied to these frequency bands to identify features that will subsequently be used to train the classifiers. Further, the assessment parameters such as SNR, mean, SD and entropy are calculated to analyze the performance of the proposed work.

Findings

The experimental results show that the proposed work yields better accuracy for all classifiers when compare to state-of-the-art techniques.

Originality/value

The experimental results show that the proposed work yields better accuracy for all classifiers when compare to state-of-the-art techniques.

Details

International Journal of Intelligent Unmanned Systems, vol. 10 no. 1
Type: Research Article
ISSN: 2049-6427

Keywords

Available. Content available

Abstract

Details

International Journal of Intelligent Unmanned Systems, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2049-6427

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Article
Publication date: 26 January 2022

Rajashekhar U., Neelappa and Harish H.M.

The natural control, feedback, stimuli and protection of these subsequent principles founded this project. Via properly conducted experiments, a multilayer computer rehabilitation…

178

Abstract

Purpose

The natural control, feedback, stimuli and protection of these subsequent principles founded this project. Via properly conducted experiments, a multilayer computer rehabilitation system was created that integrated natural interaction assisted by electroencephalogram (EEG), which enabled the movements in the virtual environment and real wheelchair. For blind wheelchair operator patients, this paper involved of expounding the proper methodology. For educating the value of life and independence of blind wheelchair users, outcomes have proven that virtual reality (VR) with EEG signals has that potential.

Design/methodology/approach

Individuals face numerous challenges with many disorders, particularly when multiple dysfunctions are diagnosed and especially for visually effected wheelchair users. This scenario, in reality, creates in a degree of incapacity on the part of the wheelchair user in terms of performing simple activities. Based on their specific medical needs, confined patients are treated in a modified method. Independent navigation is secured for individuals with vision and motor disabilities. There is a necessity for communication which justifies the use of VR in this navigation situation. For the effective integration of locomotion besides, it must be under natural guidance. EEG, which uses random brain impulses, has made significant progress in the field of health. The custom of an automated audio announcement system modified to have the help of VR and EEG for the training of locomotion and individualized interaction of wheelchair users with visual disability is demonstrated in this study through an experiment. Enabling the patients who were otherwise deemed incapacitated to participate in social activities, as the aim was to have efficient connections.

Findings

To protect their life straightaway and to report all these disputes, the military system should have high speed, more precise portable prototype device for nursing the soldier health, recognition of solider location and report about health sharing system to the concerned system. Field programmable gate array (FPGA)-based soldier’s health observing and position gratitude system is proposed in this paper. Reliant on heart rate which is centered on EEG signals, the soldier’s health is observed on systematic bases. By emerging Verilog hardware description language (HDL) programming language and executing on Artix-7 development FPGA board of part name XC7ACSG100t the whole work is approved in a Vivado Design Suite. Classification of different abnormalities and cloud storage of EEG along with the type of abnormalities, artifact elimination, abnormalities identification based on feature extraction, exist in the segment of suggested architecture. Irregularity circumstances are noticed through developed prototype system and alert the physically challenged (PHC) individual via an audio announcement. An actual method for eradicating motion artifacts from EEG signals that have anomalies in the PHC person’s brain has been established, and the established system is a portable device that can deliver differences in brain signal variation intensity. Primarily the EEG signals can be taken and the undesirable artifact can be detached, later structures can be mined by discrete wavelet transform these are the two stages through which artifact deletion can be completed. The anomalies in signal can be noticed and recognized by using machine learning algorithms known as multirate support vector machine classifiers when the features have been extracted using a combination of hidden Markov model (HMM) and Gaussian mixture model (GMM). Intended for capable declaration about action taken by a blind person, these result signals are protected in storage devices and conveyed to the controller. Pretending daily motion schedules allows the pretentious EEG signals to be caught. Aimed at the validation of planned system, the database can be used and continued with numerous recorded signals of EEG. The projected strategy executes better in terms of re-storing theta, delta, alpha and beta complexes of the original EEG with less alteration and a higher signal to noise ratio (SNR) value of the EEG signal, which illustrates in the quantitative analysis. The projected method used Verilog HDL and MATLAB software for both formation and authorization of results to yield improved results. Since from the achieved results, it is initiated that 32% enhancement in SNR, 14% in mean squared error (MSE) and 65% enhancement in recognition of anomalies, hence design is effectively certified and proved for standard EEG signals data sets on FPGA.

Originality/value

The proposed system can be used in military applications as it is high speed and excellent precise in terms of identification of abnormality, the developed system is portable and very precise. FPGA-based soldier’s health observing and position gratitude system is proposed in this paper. Reliant on heart rate which is centered on EEG signals the soldier health is observed in systematic bases. The proposed system is developed using Verilog HDL programming language and executing on Artix-7 development FPGA board of part name XC7ACSG100t and synthesised using in Vivado Design Suite software tool.

Details

International Journal of Pervasive Computing and Communications, vol. 19 no. 3
Type: Research Article
ISSN: 1742-7371

Keywords

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Article
Publication date: 14 September 2018

Mattias Jacobsson and Christoph Merschbrock

The purpose of this paper is to explore the role, practices and responsibilities of building information modeling (BIM) coordinators (BCs).

1838

Abstract

Purpose

The purpose of this paper is to explore the role, practices and responsibilities of building information modeling (BIM) coordinators (BCs).

Design/methodology/approach

The aim is achieved through a review of existing publications (n=183) in which the term “BIM coordinators” has been described and discussed (n=78), complemented by interviews with four Norwegian BIM experts.

Findings

The findings from the review indicate that the core responsibilities of BCs involve clash detection, managing information flows and communication flows, monitoring and coordinating design changes, supporting new working procedures and technical development and acting as a boundary spanner. The complementary interview study extends these findings with two additional practices and a reflection on the experienced challenges, obstacles and potential future development of the role. In essence, the authors propose that the role of BCs can be defined as being responsible for external/internal alignment and coordination of actor needs, and engaged in product-, process- and system-oriented practices of BIM.

Research limitations/implications

Given that this study is primarily an integrative literature review of BCs, it has the limitations common with such an approach. Therefore, future studies should preferably extend presented findings through either a survey, further in-depth interviews with BCs or reviews of closely related BIM specialist roles such as BIM managers or BIM technicians.

Practical implications

With BCs seemingly being central to information management and knowledge domain integration within the architecture, engineering and construction industry, an understanding of their importance and role should be of interest to anyone seeking to tap into the potential of BIM. This paper outlines specific implications for construction manager, educators and BCs.

Originality/value

The value of this study lies primarily in the fact that it is the first thorough investigation of the role, practices and responsibilities of BCs.

Details

Engineering, Construction and Architectural Management, vol. 25 no. 8
Type: Research Article
ISSN: 0969-9988

Keywords

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