Search results

As technology advances the demand for an analog-to digital converter has increased, as every application demands a converter as per its parameters. Currently, work is done on improvement of data converters at three levels of design – architectural, circuit and physical level. This paper aims to review the work done in the field of analog-to-digital converters (ADCs) at architectural and circuit level and discusses the achievements in this field. Furthermore, a new architecture is proposed, which works at higher resolution and provides optimum design parameters at low power consumption.

A hybrid architecture combining the features of synthetic approximation register and sigma-delta ADC is presented. The validity of the proposed design at architectural level is verified using MATLAB SIMULINK simulations.

The design simulation was tested for a sinusoidal wave of 1 V at the test frequency of 60 Hz. The design consumes least power, and is found to yield an error of the order less than 10–3 V, thus providing highly accurate digital output.

The design is applicable in many applications including biomedical systems, Internet-of-Things and earthquake engineering. This architecture can be further optimized to obtain better performance parameters.

Recent evidence suggests that leaders' communication is central to an organization's success. The purpose of the current research is to examine how the leader's motivating language (direction giving, empathetic and meaning-making) translates into positive career outcomes through the mechanism of positive affective tone.

A three-wave time-lagged research design was applied to collect data (N = 320) from employees of the telecom sector of Pakistan.

Employing structural equation modeling (SEM) analysis, the study results indicate that high levels of leader's motivating language (direction giving and meaning-making) result in positive affective tone in employees, which further creates career motivation (career insight, career resilience and career identity) and career satisfaction. In contrast, positive affective tone does not mediate between empathetic language and career motivation (career insight, career resilience and career identity) and career satisfaction relationship.

The present study's findings explicate the unique effects and mechanism through which leaders motivating language becomes influential in reaping its benefits for followers' career outcomes. More research is warranted to examine other attitudinal and behavioral outcomes of leaders motivating language. This study research prepares future researchers to investigate other mediators and moderators in the leaders motivating language–career outcomes relationship. The authors recommend further implications of the study's findings for research and practice in the domain of leadership, affect and careers.

The current study opens up a new perspective in leaders motivating language literature by examining the underlying mechanism of positive affective tone.

This study aims to conduct a comprehensive review of scholarly literature on the educational impacts of the metaverse, systematically identifying emerging themes, challenges and implications for metaverse education.

The study uses systematic literature review techniques using the Scopus database to investigate empirical studies and systematic reviews specifically examining the convergence of the metaverse and education.

The study shows that the metaverse has a substantial influence on education, emphasising immersive learning, real social interactions and the transformation of traditional frameworks. This paper identifies nine themes, illuminating the growing relevance of metaverse tools in academic institutions, influencing learning methods, outcomes and positive student dispositions.

This study provides a foundation for further investigations into the metaverse’s potential to disseminate knowledge and enhance comprehension of metaverse technologies. It explores the metaverse’s potential in relation to progress, upcoming trends and cultural awareness while highlighting obstacles that must be addressed for effective metaverse teaching.

This research paper makes a substantial scholarly contribution by undertaking a systematic analysis of empirical studies and identifying emerging themes in the area of metaverse education. It offers substantial insights into the transformative potential of metaverse education and its implications for pedagogical and instructional approaches in the digitised era through the analysis of fundamental inquiries.

The purpose of this paper is to investigate the impact of corporate social responsibility (CSR) on corporate financial performance (CFP) using Zakat as a measure for CSR.

The study examines a sample of 107 non-financial firms listed on the Saudi Arabia stock market over a ten-year period from 2004 to 2013. The authors use the generalized method of moments framework developed by Arellano and Bover (1995) and Blundell and Bond (1998). In addition, for comparison purpose and as a robustness check, the present study uses other panel data techniques including fixed effects model, random effects model (and pooled ordinary least squares.

The results reveal that there is a strong positive relationship between CSR (Zakat) and CFP. This suggests that Zakat contribute positively to both firm’s profitability and value and can be considered as a win-win strategy to maximize returns and improve performance while considering the society as a whole. The results are robust to alternative econometric estimation methods.

The companies in Islamic economies can effectively and efficiently implement the basic Shari’a Law of paying Zakat, as a successful measure to implement CSR program, thus benefiting the society by narrowing the gap between the haves and have-nots, that, in turn, leads the company to achieve successfully its short-term as well as long-term goals and enhances the value of the firm in the market. Moreover, corporations are generally encouraged to adopt CSR because of its perceived benefits to both macro- and micro-performances.

To the best of the author’s knowledge, this is the first empirical study attempting to examine CSR-CFP relationship within Saudi context employing Zakat as a proxy for CSR. Additionally, the paper provides support for the stakeholder theory from an Islamic perspective.

This paper aims to investigate the influence of religiosity on the relationship between abusive supervision and deviant work behavior (DWB). This paper examines whether the desire for revenge mediates the relationship between abusive supervision and DWB and whether the strength of this relationship is moderated by religiosity.

The proposed relationships were examined by collecting primary data from 350 employees using multistage sampling procedures. Hayes’ Process Macro was used to analyze the proposed moderated-mediation model of abusive supervision, DWB, religiosity and desire for revenge.

The analytical findings indicate that an employee’s desire for revenge mediates the relationship between abusive supervision and DWB. However, religiosity moderates the indirect effect of abusive supervision (mediated by the desire for revenge) on DWB.

To the best of the authors’ knowledge, this is the first study that explores the role of individual-level religiosity in mitigating the harmful effects of abusive supervision on deviant behavior and revenge in the workplace.

This study aims to utilize the cognitive appraisal theory of stress and coping by conducting a joint investigation of the mediating role of knowledge hiding behaviors in the relationship of exploitative leadership on employee’s work related attitudes (i.e. turnover intentions) and behaviors (e.g. job performance, creativity) and fear of negative evaluation in influencing this mediation.

Using the Preacher and Hayes’ (2004) moderated-mediation approach, the authors tested the model by collecting multi-wave and two-source data from employees and fellow peers (n = 281) working in the service sector of Pakistan.

Results of the study demonstrate that exploitative leadership adversely influences one’s performance and turnover intentions through knowledge hiding behaviors. The fear of negative evaluation moderates the indirect effects of exploitative leadership on employee’s outcomes through knowledge hiding behaviors such that these indirect effects are stronger for individuals possessing low levels of fear of negative evaluation.

The current study contributes to knowledge management and dark leadership literature by suggesting knowledge hiding behaviors as a process through which exploitative leaders unveil their negative effects on employee’s outcomes. This study is also unique in the sense, as it posits that employees might vary because of their dispositional traits (i.e. low fear of negative evaluation) in responding to exploitative leadership with greater knowledge hiding behaviors.

The purpose of this paper is to extend the scant literature on the effect of abusive supervision on knowledge sharing by examining the roles of Islamic work ethic and learning goal orientation in moderating the effect.

This paper utilizes a cross-lagged survey research design to collect data from 735 employees working in the services and manufacturing sectors of Pakistan.

The data analysis revealed that abusive supervision has a damaging effect on knowledge sharing in the workplace. However, employee learning goal orientation and the Islamic work ethic help in mitigating this detrimental effect.

The main theoretical implication is to advance knowledge on the boundary conditions that help in mitigating the undesirable effect of abusive supervision on sharing of knowledge in organizational settings.

This paper provides practical insights into mitigating the damaging effects of abusive supervision, a prevalent issue in Asian societies, through the lenses of Islamic business ethics and learning goal orientation.

This is the first study that examines the boundary conditions placed by the Islamic work ethic and learning goal orientation around the relationship between abusive supervision and knowledge sharing in the context of Pakistan.

The purpose of this paper is to examine curiosity as a distal predictor of knowledge sharing facilitated by informal learning. It also probes the boundary conditions imposed by ebullient supervision in the influence of curiosity on knowledge sharing.

The authors collected data through a two-wave survey of 349 knowledge workers in the IT sector and used structural equation modeling to analyze the data.

The results indicated a positive relationship between curiosity and knowledge sharing. In particular, informal learning was found to mediate the relationship between curiosity and knowledge sharing and ebullient supervision was identified as a significant condition that strengthens the effect of curiosity on informal learning.

Organizations can promote knowledge sharing by harnessing curiosity as an intrinsic motivator for employees to engage in informal learning. Moreover, the findings identified ebullient supervision as an extrinsic motivator within the work environment, suggesting its potential to enhance the impact of curiosity on knowledge sharing.

This paper broadens the limited literature on ebullient leadership by revealing how it strengthens the effects of curiosity and informal learning on knowledge sharing.

This study aims to investigate the machining performance of CVD-coated carbide tools by considering most crucial machinability aspects: cutting force, tool life, surface roughness and chip morphology in high-speed hard turning of AISI 4340 alloy steel under a sustainable minimum quantity lubrication (MQL) environment.

The purpose of this study is to analyze the performance of coated carbide tools under MQL environment therefore, machining tests were performed in accordance with the Taguchi L9 orthogonal array, accommodating the three crucial machining parameters such as cutting speed (V = 300–400 m/min), feed rate (F = 0.1–0.2 mm/rev) and depth of cut (DOC = 0.2–0.4 mm). The measured or calculated values obtained in each experimental run were validated for normality assumptions before drawing any statistical inferences. Taguchi signal-to-noise (S/N) ratio and analysis of variance methodologies were used to examine the effect of machining variables on the performance outcomes.

The quantitative analysis revealed that the depth of cut exerted the most significant influence on cutting force, with a contributing rate of 60.72%. Cutting speed was identified as the primary variable affecting the tool life, exhibiting a 47.58% contribution, while feed rate had the most dominating impact on surface roughness, with an overall contributing rate of 89.95%. The lowest cutting force (184.55 N) and the longest tool life (7.10 min) were achieved with low machining parameters at V = 300 m/min, F = 0.1 mm/rev, DOC = 0.2 mm. Conversely, the lowest surface roughness (496 nm) was achieved with high cutting speed, low feed rate and moderate depth of cut at V = 400 m/min, F = 0.1 mm/rev and DOC = 0.3 mm. Moreover, the microscopic examination of the chips revealed a serrated shape formation under all machining conditions. However, the degree of serration increased with an incremental raise with cutting speed and feed rate.

The study is limited to study the effect of machining parameters within the stated range of cutting speed, feed rate and depth of cut as well as other parameters.

Practitioners may consider to adopt this machining technique to create more sustainable working environment as well as eliminate the disposal cost of the used metal cutting fluid.

By applying this machining technique, diseases caused by metal cutting fluid to the mechanist will be significantly reduced, therefore creating better lifestyles.

Hard turning is commonly carried out with advanced cutting tools such as ceramics, cubic boron nitride and polycrystalline cubic boron nitride to attain exceptional surface finish. However, the high cost of these tools necessitates exploration of alternative approaches. Therefore, this study investigates the potential of using cost-effective, multilayer-coated carbide tools under MQL conditions to achieve comparable surface quality.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-01-2024-0013/

This paper aims to answer the question of how, why and when abusive supervision affects employee creativity. Drawing on the conservation of resources theory, this paper examines the direct and indirect (via psychological distress) effects of abusive supervision on employee creativity. It further investigates the boundary conditions imposed by employees’ perceived distributive and procedural justice in the relationships between abusive supervision, psychological distress and employee creativity.

The study uses multi-sourced and time-lagged data collected in three waves from a survey of employees-supervisor dyads working in the Chinese manufacturing sector. In the first wave, the authors received data from 347 employees on perceived abusive supervision and perceived distributive and procedural justice. In the second wave, 320 employees shared their perceptions of psychological distress at work. In the third wave, the authors received ratings for employee creativity from the direct supervisors of 300 employees. The data were analyzed using bootstrapped moderated mediation procedures.

The findings revealed a significant negative influence of abusive supervision on employee creativity both directly and indirectly in the presence of perceived psychological distress. However, distributive and procedural justice was found to mitigate the negative impact of abusive supervision on employee creativity.

Abusive supervision has adverse consequences for employees’ creativity because it affects their psychological health. HR and top management should prioritize addressing abusive supervision first and foremost to boost employee creativity in the workplace. Managers should give employees opportunities for participation and foster a climate of fairness in the organization to mitigate the harmful consequences of abusive supervision.

To the best of the authors’ knowledge, this is the first empirical study that examines the psychological distress-based mechanism in the relationship between abusive supervision and creativity while considering the interactive effects of distributive and procedural justice. It addresses an important research gap in the literature by proposing that organizational perceived distributive and procedural justice can mitigate the detrimental effects of abusive supervision.