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1 – 10 of 22
Article
Publication date: 5 May 2015

M. Yasin and Pervez Akhtar

The purpose of this paper is to analyze the convergence performance of Bessel beamformer, based on the design steps of least mean square (LMS) algorithm, can be named as Bessel…

Abstract

Purpose

The purpose of this paper is to analyze the convergence performance of Bessel beamformer, based on the design steps of least mean square (LMS) algorithm, can be named as Bessel LMS (BLMS) algorithm. Its performance is compared in adaptive environment with LMS in terms of two important performance parameters, namely; convergence and mean square error. The proposed BLMS algorithm is implemented on digital signal processor along with antenna array to make it smart in wireless sensor networks.

Design/methodology/approach

Convergence analysis is theoretically developed and verified through MatLab Software.

Findings

Theoretical model is verified through simulation and its results are shown in the provided table.

Originality/value

The theoretical model can obtain validation from well-known result of Wiener filter theory through principle of orthogonality.

Details

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, vol. 34 no. 3
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 17 March 2016

muhammad yasin khattak and pervez - akhtar

The aim of this investigation is to make the Bessel beamformer fully automatic when it is combined with Root MUSIC (MUltiple SIgnal Classification) and is based on the array…

Abstract

Purpose

The aim of this investigation is to make the Bessel beamformer fully automatic when it is combined with Root MUSIC (MUltiple SIgnal Classification) and is based on the array processing in the application of beamforming and Direction of Arrival (DOA) algorithm for source position. The concept is analyzed for modified Bessel beamformer with Root MUSIC to form a non-blind array processing technique which is then used to focus a beam towards a desired user and place nulls towards interferers for capacity improvement.

Design/methodology/approach

The idea is manipulated for modified Bessel beamformer with Root MUSIC relies on MATLAB software with the goal to obtain high efficiency in terms of signal recovery, directive gain by minimizing MSE and place nulls towards interferers.

Findings

The finding of the analysis is presented in adaptive environment and provided in the tables. The paper shows that the presented method leads to superior results and can be used as a better alternative in many practical applications to avoid operator involvement.

Research limitations/implications

The adaptive processes described in the paper are still limited to simulation due to non availability of real system for testing.

Practical implications

The paper can be extended to a next level by implementing the proposed algorithms in the real time environment using FPGA technology.

Originality/value

This is our original work that can offer scientific contribution to signal processing community and may provide better results as an automatic beamformer.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering , vol. 35 no. 3
Type: Research Article
ISSN: 0332-1649

Article
Publication date: 1 July 2014

M. Yasin and Pervez Akhtar

The purpose of this paper is to design and analyze the performance of live model of Bessel beamformer for thorough comprehension of beamforming in adaptive environment and…

Abstract

Purpose

The purpose of this paper is to design and analyze the performance of live model of Bessel beamformer for thorough comprehension of beamforming in adaptive environment and compared with live model of least mean square (LMS) in terms of gain and mean square error (MSE). It presents the principal elements of communication system. The performance of designed live model is tested for its efficiency in terms of signal recovery, directive gain by minimizing MSE using the “wavrecord” function to bring live audio data in WAV format into the MATLAB workspace. These adaptive techniques are illustrated by appropriate examples.

Design/methodology/approach

The proposed algorithm framework relies on MATLAB software with the goal to obtain high efficiency in terms of signal recovery, directive gain by minimizing MSE using the “wavrecord” function to bring live audio data in WAV format. It is assumed that this audio signal is only the message or the baseband signal received by the computer. Here the authors consider computer (laptop) as a base station containing adaptive signal processing algorithm and source (mobile phone) as a desired user, so the experiment setup is designed for uplink application (user to base station) to differentiate between desired signal, multipath and interfering signals as well as to calculate their directions of arrival.

Findings

The presented adaptive live model is reliable, robust and lead to a substantial reduction of MSE, signal recovery in comparison with the LMS technique. The paper contains experimental data. Obtained results are presented clearly and the conclusion comes directly from the presented experimental data. The paper shows that the presented method leads to superior results in comparison with the popular LMS method and can be used as a better alternative in many practical applications.

Research limitations/implications

The adaptive processes described in the paper are still limited to simulation. It is because of the non-availability of real system for testing, therefore chosen research approach that is platform of MATLAB is opted for simulation. Therefore, researchers are encouraged to test the proposed algorithms on real system if possible.

Practical implications

The paper contains experimental data. The paper's impact on the society is acceptable. These implications are consistent with the findings and the conclusions of the paper. However, there is a need to extend this paper to a next level by implementing the proposed algorithms in the real time environment using FPGA technology.

Social implications

This research will improve the signal quality of wireless cellular system by increasing capacity and will reduce the total cost of the system so that cost toward subscribers be decreased.

Originality/value

The live model presented in this paper is shown to provide better results. It is the original work and can provide scientific contribution to signal processing community.

Details

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, vol. 33 no. 4
Type: Research Article
ISSN: 0332-1649

Keywords

Open Access
Article
Publication date: 13 July 2021

Pantea Foroudi, Maria Palazzo and Asfia Sultana

Following the planned behaviour theory, the aim of the paper is to analyse the role played by brand attachment, brand characteristics and congruence in enhancing brand attitude…

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Abstract

Purpose

Following the planned behaviour theory, the aim of the paper is to analyse the role played by brand attachment, brand characteristics and congruence in enhancing brand attitude while leading to revisit intentions and word-of-mouth (WOM) in the restaurant sector.

Design/methodology/approach

The study is based on the quantitative method and considered 464 questionnaires fulfilled by customers of restaurants. The data were explored employing the partial least square–structural equation modelling (PLS-SEM).

Findings

This study expands the literature about WOM and revisit intentions. The paper states that brand attitude positively influenced revisit intentions and WOM. Besides, findings highlighted that analysed concepts were positively correlated and that they played an important role in impacting revisit intentions and WOM, apart from one factor: social self-congruity, which was not significantly related to brand attitude.

Practical implications

The results of this paper show practitioners how to develop suitable strategies that set the bases for developing customer loyalty and repeat business. By putting into practice these suggestions in the restaurant sector, brands can easily build up their attitude and boost a positive WOM and the intention to revisit.

Originality/value

The study offers a conceptual framework to explore the significance of several factors, including revisit intentions and WOM. In practice, taking into account the proposed framework, it is suggested that restaurant managers should assess these two items using several factors including congruence, brand characteristics and brand attachment.

Details

British Food Journal, vol. 123 no. 13
Type: Research Article
ISSN: 0007-070X

Keywords

Content available
Article
Publication date: 1 May 2002

1315

Abstract

Details

Disaster Prevention and Management: An International Journal, vol. 11 no. 2
Type: Research Article
ISSN: 0965-3562

Article
Publication date: 21 April 2023

Samson Samwel Shillamkwese, Qingxiong (Derek) Weng, Hirra Pervez Butt, Hussain Tariq and Zahid Hameed

Although work-related antecedents of abusive supervision are well-known, knowledge on the cross-domain antecedents of this destructive leadership behavior is scarce. Accordingly…

Abstract

Purpose

Although work-related antecedents of abusive supervision are well-known, knowledge on the cross-domain antecedents of this destructive leadership behavior is scarce. Accordingly, this study aims to investigate off-the-job supervisors’ after-work experiences that may influence their work behavior. The authors explore how and when a supervisor’s poor recovery experiences lead to abusive supervisory behaviors through a negative start-of-workday mood for high vs low supervisor sleep quality.

Design/methodology/approach

The authors conducted a single-source, three-phase field study (N = 422) to test the proposed moderated mediation model for participants from a large telecommunications company located in Anhui province, People’s Republic of China.

Findings

Poor recovery experiences in the supervisor’s personal life can spill over to their work domain and provoke abusive supervisory behavior through the mediating effect of a negative start-of-workday mood. Moreover, a supervisor’s good night’s sleep (i.e. first-stage moderator) serves as a key mitigating factor to diminish the negative start-of-workday mood resulting from a lack of relaxation, mastery experiences and control experiences (except for the lack of psychological detachment from work) and lessens abusive supervision.

Originality/value

This study contributes to the literature examining off-the-job events to understand the antecedents of abusive supervision that are beyond organizations’ control but significantly influence workplace behaviors, showing that not all antecedents of abusive supervision exist in the workplace; some are transferred from the home domain through nonvisible moods. Finally, the inclusion of sleep quality as a first-stage moderator provides insights on preventing abusive supervision caused by nonwork-related events. This adds a unique dimension to the abusive supervision literature by highlighting factors in the home domain that can prevent negative spillovers to the work domain. The authors conclude with some theoretical and practical implications for researchers and practitioners.

Details

International Journal of Conflict Management, vol. 34 no. 3
Type: Research Article
ISSN: 1044-4068

Keywords

Article
Publication date: 21 March 2023

Hussain Tariq, Abdullah Almashayekhi, Ahsan Ali, M. Burhan and Hirra Pervez Butt

Expanding on the research of the antecedents of abusive supervision, this study aims to explore supervisor role overload as a supervisor-level predictor of abusive supervision…

Abstract

Purpose

Expanding on the research of the antecedents of abusive supervision, this study aims to explore supervisor role overload as a supervisor-level predictor of abusive supervision. Based on transactional stress theory, the authors investigate role overload that is appraised as a challenge or a hindrance stressor by supervisors, leading to pleasant or unpleasant feelings, respectively. The authors propose that, based on their appraisal, these feelings of supervisors act as a mediating mechanism that can facilitate or inhibit their abusive behaviour at work. Additionally, the authors posit emotional intelligence (EI) as a key moderator in helping supervisors manage the negative feelings arising from perceiving role overload as a hindrance and preventing them from demonstrating abusive supervision.

Design/methodology/approach

To test the proposed moderated mediation model, the authors collected two-wave data from middle-level supervisors or managers from several organisations located in the Eastern Province of Saudi Arabia (N = 990).

Findings

The results largely support the hypothesised relationships and show that depending on supervisor appraisal, role overload can generate pleasant or unpleasant feelings in supervisors and, consequently, impede or facilitate abusive supervision. They also shed light on the moderating effect of EI, in that supervisors scoring high on EI are better equipped to deal with unpleasant feelings arising from role overload and effectively manage their workplace behaviour, that is, to avoid abusive behaviours.

Originality/value

Role overload can have different impacts on employees: on the one hand, there is a potential for growth, which entails drive and enthusiasm; on the other hand, it could feel like an unsurmountable mountain for employees, leading to different forms of anxiety. Because what we feel is what we project onto others, supervisors experiencing unpleasant feelings cannot be the best leader they can be; even worse, they can become a source of negativity by displaying destructive behaviours such as abusive supervision. The corollary of something as minor as an interaction with a leader experiencing unpleasant feelings could have a ripple effect and lead to adverse outcomes for organisations and their employees. This study explores the different perceptions of role overload and the subsequent feelings coming from those perceptions as supervisor-level predictors of abusive supervision. While it is not possible to objectively put a different lens inside the minds of supervisors when they face stressors at work, to feel pleasant or unpleasant, they can be trained to manage their negative feelings and keep their behaviours in check. Particularly, training managers to be more emotionally intelligent can help them not only achieve growth by overcoming challenges at work but also acknowledge and adapt their feelings to keep their behaviours in the workplace positive. In practical terms, this research can provide organisations with the knowledge required to nip the problem of abusive supervision in the bud, as prevention is always better than cure.

Details

International Journal of Conflict Management, vol. 34 no. 3
Type: Research Article
ISSN: 1044-4068

Keywords

Article
Publication date: 8 February 2024

Muneer Ahmad, Muhammad Bilal Zafar and Abida Perveen

This study aims to investigate the comparative importance of factors influencing the customer shift behavior from conventional to Islamic banking for consumer finance in Pakistan.

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Abstract

Purpose

This study aims to investigate the comparative importance of factors influencing the customer shift behavior from conventional to Islamic banking for consumer finance in Pakistan.

Design/methodology/approach

First, a comprehensive analysis of the existing literature was conducted to identify a broad range of factors related to customer shift behavior. Through an expert sampling, 14 essential factors were chosen for further investigation. Second, a questionnaire was developed using the analytical hierarchy process (AHP). This questionnaire was then distributed among customers who had previously been using conventional banking services but had made a shift toward Islamic banking. The purpose of this questionnaire was to gather data and insights regarding their motivations and decision-making process behind the shift, and a sample 215 customers are taken in the study.

Findings

The results of AHP depicts that the religiosity is a most important factor influencing customers to shift from conventional to Islamic banking, and the second most important factor is pricing. The other subsequent important factors are reputation of the bank, marketing and promotion, service quality, behavior of banks staff, Shariah compliance, management, convenience, fastness and charges/fees. Whereas documentation, ambiance and recommendation are found least important factors to patronize Islamic banking.

Practical implications

The study recommends Islamic banks to create awareness, concentrating on religious factor to have a greater impact on growth of Islamic banking and shrinking of conventional banking. Further, it suggests Islamic banks to apply Shariah-recommended approach of doing business, to help community in best possible way and to launch differentiated marketing techniques to attract customers. It also proposes regulatory authorities to provide facilitation to Islamic banking business by providing level playing field similar to conventional banking, tax equality and conversion of public financing from conventional banking to Islamic banking.

Originality/value

The originality of this study lies in its comprehensive analysis of factors influencing consumer shift behavior from conventional to Islamic banking in the context of consumer finance in Pakistan. By using the AHP, the study provides a structured approach to understanding the relative importance of these factors. This is the uniqueness of the paper that it applies the AHP for the analysis. Furthermore, the study offers practical implications for Islamic banks and regulatory authorities to effectively address and capitalize on this consumer shift trend.

Details

Journal of Islamic Marketing, vol. 15 no. 5
Type: Research Article
ISSN: 1759-0833

Keywords

Article
Publication date: 11 June 2018

Shazia Kousar, Abdul Rehman, Mahwish Zafar, Kamran Ali and Nadia Nasir

The purpose of this paper is to discuss positive spillovers of this project, especially for Pakistan because the majority of the literature discusses challenges associated with…

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Abstract

Purpose

The purpose of this paper is to discuss positive spillovers of this project, especially for Pakistan because the majority of the literature discusses challenges associated with China-Pakistan Economic Corridor (CPEC).

Design/methodology/approach

This study reviews the available literature to assess the role of CPEC in the sustainable economic development of Pakistan.

Findings

This study indicates that CPEC is an ambitious development project because it needs a larger restructuring of the economy of Pakistan and it will be productive with the successful blend of policy changes and participation of the business community in Pakistan. This project primarily creates a huge amount of foreign direct investment for Pakistan, at the same time, it will also create greater trade opportunities to China by giving access to a new market for its trading goods.

Originality/value

This study established that CPEC will improve the economic growth and trade, enhance regional connectivity, overcome energy crises, develop infrastructure and establish people-to-people contacts in both the countries, which will further help to improve the tourism sector.

Details

International Journal of Social Economics, vol. 45 no. 6
Type: Research Article
ISSN: 0306-8293

Keywords

Article
Publication date: 30 November 2021

Syed Ahmad Ali, Aida Loussaief and Muhammad Ahmed

Islamic banking industry with all of its exponential growth and global recognition has been under criticism for the past two decades. However, the problem signifies further when…

Abstract

Purpose

Islamic banking industry with all of its exponential growth and global recognition has been under criticism for the past two decades. However, the problem signifies further when such criticism is made from within the organization and is well supported by outside (the customers). The purpose of this study is to provide a coherent exploration to investigate the factors that polarize its employees and customers across many parts of the world.

Design/methodology/approach

To investigate the phenomenon, a total of 30 responses were taken through interviews 15 each from customers and employees. Afterwards, the data was analysed and summarized into two categories. In doing so, the top five Malaysia’s Islamic banks were shortlisted to collect data from employees and customers.

Findings

A detailed thematic analysis resulted in six themes (Contradiction between theory and practice, Islamic banking knowledge and awareness, inadequate Shariah training, employees’ background, Shariah compliance, Islamic banking benefits) for employees and five (Islamic banking benefits, applying Shariah in Islamic banking, knowledge of Islamic banking, Islamic banking promotion, Islamic banking employees’ behaviour) for customers, respectively.

Research limitations/implications

The results have stronger implications for both practice and theory as organizations can assess stakeholders and their perceptions about Islamic banking. Another implication is the comparative examination of employees and customers which can potentially affect decision and policy making in Islamic banks. Islamic banks can also address employment-related issues related to employees’ behaviour vis-à-vis marketing-related problems faced by its customers that will ultimately improve its global market share and strategic positioning.

Originality/value

The study is based on the importance of Islamic banking in Malaysia and explores the factors that potentially create a positive or negative insight into Islamic banking – both in employees and customers.

Details

International Journal of Ethics and Systems, vol. 38 no. 2
Type: Research Article
ISSN: 2514-9369

Keywords

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