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This paper aims to present a technique that has been developed to study the wear in the camshaft and tappet. The engine manufacturers use the most suitable materials, lubrication additives and surface coatings to minimize friction in all the components of the engine. Reduced friction results in less wear of critical engine components. The researchers are constantly trying to find an improved lubrication formula which reduces the wear and friction coefficient at a considerably low price. In this regard, the cam follower interface is of much importance because most of the wear occurs in this interface.

The tappets and the cam lobes are analyzed to determine wear. A two-dimensional optical surface profilometer is used to measure the tappet wear, and a high-resolution linear variable differential transformer is used for the measurement of cam lobes. Tests are conducted on Mercedes Benz engine OM 646 under constant camshaft speed, constant inlet lubricant temperature and constant lubricant pressure to study the oil rheology on cam tappet wear.

The results show that the wear occurs on the cam tappet interface, which is almost a linear phenomenon, and it increases with use.

Customized jigs were made to measure wear of camshaft and tappet.

This paper aims to critically analyse the application of present value (PV) practised in the concept of time value of money (TVM) from the perspective of maqāṣid al-Sharī‘ah (objective of Islamic law) explained by Ibn ‘Ashur. The analysis is important as this concept has been adopted in the practice of Islamic accounting measurement.

This paper uses qualitative research approach. The authors first review literature related to TVM in Islamic perspective to understand the extent to which the scholarly articles have been discussing this topic. Furthermore, the authors conduct face-to-face interviews with the experts to comprehend the means of TVM application in the recent Islamic accounting practices. The tawhid (monotheistic) paradigm is further used with special reference to the concept of maqāṣid al-Sharī‘ah of Ibn ‘Ashur to critically analyse the practice of TVM in Islamic accounting measurement.

This study identifies the opposing views among the experts on the topic of TVM from the Islamic perspective. That is, the experts’ opinion on this issue can be classified into two. Firstly, a view that rejects TVM and proposes the concept of economic value of time. Secondly, an opinion that recognises TVM with the basis of bay’ al-mu’ajjal (deferred sale). This paper further critically analyses these two opposing opinions. The discussion is established based on the theory of maqāṣid al-Sharī‘ah as explained by Ibn ‘Ashur and the excerpts from interviewing the experts. This work draws a conclusion that such PV-based measurement of TVM does not meet the Islamic principles explained in the theory of Ibn ‘Ashur’s maqāṣid al-Sharī‘ah. Thus, the practice of PV measurement in Islamic accounting is debatable.

This study does not establish a positivism discussion. It is thus the generalisation of this work is not applicable to the Islamic perspective in general. Rather, it is limited to Ibn ‘Ashur’s maqāṣid al-Sharī‘ah.

An analysis of PV measurement adoption in Islamic accounting from maqāṣid al-Sharī‘ah perspective is practically important to raise the awareness that such practice is debatable in Islamic principles. That is, such debate opens new arena for academics, industry professionals and other related stakeholders to further discuss an ideal practice of Islamic accounting.

This paper is among the pioneers that analyses the concept of TVM, in particular relation to PV measurement in Islamic accounting practice from the perspective of Ibn ‘Ashur’s maqāṣid al-Sharī‘ah.

Spatio-temporal variations in precipitation pattern of district Sargodha is one of the most significant researchable questions because of the massive reliance on rainfall for agricultural practice in the study area. The pattern of current rainfall in the study area is unexpectedly changed. The purpose of the present study is to examine the changing precipitation pattern and to link it with climate change.

The study was conducted by using rainfall data of the past 30 years collected from 8 meteorological stations around the study area. The averages of rainfall on monthly basis were temporally arranged, and the fluctuation trends were studied using GIS and statistics. The temporal data of rainfall were compared and contrasted with the precipitation normals of the study area from 1981to 2010. The rainfall deviation in the present study was calculated. The spatial pattern of rainfall was plotted by interpolating the eight points of Punjab around the study area for the first two decades, whereas the past decade was analysed by incorporating five more points of Tehsils in the existing eight. The spatial and statistical representation of data were examined by compare and contrast with the previous findings.

The rainfall in the study area showed remarkable changes in magnitude and spatiality. The rainfall in the district is on the rise, whereas the spatial pattern of rainfall is becoming more complex and anomalous in character. This paper provides convincing evidence about the impact of climate change on the magnitude and spatial patterns of precipitation in the study area.

It will be helpful for understanding the shifts in the rainfall pattern in future as well as for the preparation of response to the issue of climate change and its impacts.

The current manuscript, for the very first time, provided detailed insights about the precipitation pattern shifting during the last 30 years in district Sargodha, Punjab, Pakistan. Furthermore, agricultural sector would likely get severally affected because of seasonal changes in climatic factors like rainfall and have strong food security implications. The current findings will be useful to manage the climate change-related issues in Pakistan and helpful for the policy makers to design a coping strategy for climate change impacts.

There is a growing trend in online shopping in developing and underdeveloped economies. Measuring web retail service quality is vital to enhance and retain online customers for higher profits. As a result, it is essential to understand e-service quality and its relationship with other e-commerce-related variables identified as customer satisfaction, word-of-mouth (WOM), loyalty and repurchase intention. The main objective of this research is to validate the psychometric properties of E-TailQ and ES-Qual scales to measure e-service quality in the context of an emerging economy.

The study was administered by surveying online customers through a convenience sampling approach. The sample data consisted of 329 valid responses. The data were analyzed using confirmatory factor analysis (CFA) and structural equation modeling (SEM).

The results suggest that both the scales are valid, reliable and adequate and confirm the psychometric properties of E-TailQ and ES-Qual scales in an emerging economy context. There is a positive and significant relationship between latent variables (E-TailQ and ES-Qual) and customer outcome variables like satisfaction, loyalty, WOM and repurchase intention. Additionally, the coefficients of the E-TailQ scale have higher values than ES-Qual scales in all dimensions. The perceived quality proved to be a precedent of satisfaction to a lesser extent than other scales' constructs, and it proved to be a superior predictor of WOM for the E-TailQ scale and loyalty for the ES-Qual scale. Overall, when measured by the ES-Qual scale, perceived quality could explain much of the sample's satisfaction, loyalty and repurchase intention compared to E-TailQ.

One of the significant limitations of this study is related to the data collection, as individual responses were collected at one particular point in time. Thus, it is impossible to verify the development of perceived service quality outcomes over a specific time. Another possible limitation is the selection of only two widely used scales, although other options are available in the literature. Finally, developing a new scale to address future challenges might be another alternative.

The results obtained in the study will help managers assess customer satisfaction, the reputation of the business through WOM, and customer intentions for the repurchase that will lead to loyalty by emphasizing e-service quality. It will enable them to design strategies for improving business performance. The developed instrument will assist in identifying the gaps and describing how service quality can achieve higher levels of customer satisfaction.

Several studies in the literature have used E-TailQ and ES-Qual scales to measure e-service quality in developed countries. Only a few studies addressed the validity of these widely used competing scales in an emerging economy like Pakistan. This study addresses the literature gap by addressing the reliability and validity of these scales and assesses the impact of e-commerce-related variables. Besides, the study reveals insights into the literature by addressing multiple dimensions of e-service quality and summarizes a deep understanding of each scale item that affects the perceived quality in a developing economy like Pakistan.

Multilevel inverters play a major role in the development of high-power industrial applications. In traditional low-level inverters (e.g. 2-level), the switching frequency is restricted and the harmonic spectrum of the system is hard to meet power requirements. Similarly, high-level inverters consist of a large number of switches, complex modulation techniques and complex hardware architecture, which results in high power loss and a significant amount of harmonic distortion. Furthermore, it is a must to ensure that every switch experiences the same stress of voltage and current. The purpose of this paper is to present an inverter topology with lower conduction and switching losses via reduced number of switches and equal voltage source-sharing technique.

Herein, the authors present a cascaded multilevel inverter having less power switches, a simple modulation technique and an equal voltage source-sharing phenomenon implementation.

The modulation technique becomes more complex when equal voltage source-sharing is to be implemented. In this study, a novel topology for the multilevel inverter with fewer switches, novel modulation technique, equal voltage source-sharing and Inductor-Capacitor-Inductor filter implementation is demonstrated to the reduce harmonic spectrum and power losses of the proposed system.

The nine-level inverter design is validated using software simulations and hardware prototype testing; the power losses of the proposed inverter design are elaborated and compared with the traditional approach.

The purpose of this paper is to explore leadership style, organizational culture and job commitment in university libraries of Pakistan and the relationships among them.

A structured questionnaire was developed and self administered to 115 professional librarians. Hypotheses were tested through t‐test, Pearson chi‐square and ANOVA.

The results show that the library professionals were not very sensitive about any relationship among these three variables at their workplace. A majority of the professionals perceived that their chief librarians had an autocratic style of leadership and libraries tend to adopt an achievement and bureaucratic culture. Most of the library professionals seemed to be highly committed with their organizations. It means that they favored result‐oriented culture.

The research was limited to university libraries in Pakistan's province of Punjab and federal capital Islamabad.

The study is useful to understand leadership style, organizational culture and job commitment in university libraries.

The aim of this empirical study is to examine how religiosity, animosity and ethnocentrism interact to influence judgment about US products and purchase actions of young consumers in a conservative Islamic country like Pakistan. Many studies have been conducted before in progressive Islamic countries such as Malaysia, Jordan, Turkey and Tunisia but not in conservative Islamic countries like Pakistan.

A validated questionnaire derived from literature is used for data collection. Data were collected from 381 college students in four provincial capital cities of Pakistan (Karachi, Lahore, Quetta and Peshawar). Structural equation modeling is used to test the framework.

This study reveals key significant cause and effect relationships like consumers religiosity on foreign product judgment, consumers animosity on foreign product judgment, consumers religiosity on ethnocentric tendencies of consumers, consumers ethnocentric tendencies on foreign product judgment and foreign product judgment on purchase action of consumers.

This study attempts to add value to the existing literature on consumer behavior, especially the role of religiosity, animosity and ethnocentrism in young consumers. This study is the first of its kind on examining religiosity, animosity and ethnocentrism among young consumers in Pakistan. To the best of the authors’ knowledge, this study will guide the marketing managers to formulate appropriate strategies when targeting young consumers, especially when they decide to boycott US products.

This study aims to explore the potential determinants of customers’ satisfaction with the Islamic banking system and highlights the fact that both internal and external factors play key roles in customer satisfaction (CS) during the COVID-19 pandemic.

Primary data from six Islamic banks (Al Baraka Bank Ltd, BankIslami Pakistan Ltd, Burj Bank Ltd, Dubai Islamic Bank Ltd, Meezan Bank Ltd and MCB-Islamic Bank Ltd) were analysed using a binary logit method.

The results showed that internal factors such as hand sanitisation facilities, strict compliance with wearing a mask before entering the bank, the distance between customers and dealing officers, an organised network of branches (in terms of health safety protocols), the behaviour of dealing officers and extended banking hours contributed significantly to enhancing the satisfaction of Islamic banking customers during the pandemic in Pakistan. The results showed that high service charges on loans have a significant adverse impact on CS. Concerning external factors, the results showed that mass media platforms that can update customers about new services and customer transactions’ processing timing, the number of operational branches in the pandemic period, available parking space in front of a bank and recommendations from family and friends to open an account with a particular bank increase CS levels.

The study’s results will be helpful for the policymakers and practitioners to design such policies that can promote the Islamic banking system in developing countries such as Pakistan.

Under the pandemic situation, the present study highlights the internal and external determinants of Islamic banking customers’ satisfaction in Pakistan. The study provides a foundation for Islamic Banks to revise their policy frameworks and marketing strategies to attract customer interest and improve their satisfaction levels.

The study aims to inspect the impact of employees’ perception of corporate social responsibility (CSR) and their spiritual values on their affective commitment and job satisfaction, which in turn may promote organizational citizenship behavior. Furthermore, this study examines the moderating effect of Islamic work ethics to identify whether they strengthen or weaken the proposed associations.

A survey instrument was devised to collect data from employees. The statistical analysis of the data was conducted using the Smart PLS software. Additionally, the research uses the “Partial Least Square-Structural Equation Modelling (PLS-SEM)” technique.

The findings of the study suggest that employees’ perception of CSR exhibits a positive association with affective commitment and job satisfaction. Likewise, employees’ spiritual values demonstrate a positive and significant correlation with affective commitment and job satisfaction. Finally, the outcomes reveal that affective commitment and job satisfaction play a major role in fostering organizational citizenship behavior. Moreover, Islamic work ethics positively and significantly moderate the relationship between employee CSR perception and affective commitment and between employee CSR perception and job satisfaction.

This research study endeavors to fill the gaps in the current literature by investigating two crucial aspects of employees: their perception of CSR and spiritual values. Additionally, the study includes Islamic work ethics as a moderator to provide a more comprehensive understanding of how these factors contribute to fostering organizational citizenship behavior. This work highlights the significance of spiritual values and social responsibilities in employees’ lives and how Islamic work ethics shape their behavior accordingly.

This study aims to propose a new model of Islamic cooperative mortgage of housing finance (ICOM) to provide a lower monthly initial amount with a longer tenure for the low- and middle-income members. This model is developed to ease the burden on borrowers concerning the high initial down payment (ID).

The ICOM model is a no-interest mortgage and is developed based on the cooperative home mortgage model by Ebrahim (2009). The model is verified using numerical examples to ensure its feasibility to produce lower monthly initial amounts and compared to the cooperative home mortgage.

From the numerical example, the ICOM model shows a lower monthly initial amount with a longer tenure compared to the cooperative home mortgage. The monthly payment is also lower than the cooperative home mortgage.

The authors compare their model with Ebrahim’s (2009) cooperative home mortgage because of a constraint of limited previous studies on housing finance. Therefore, this model is developed by considering the unaffordability of the initial down payment among low-income borrowers. As this model introduces a lower monthly initial amount, the authors expect it can reduce the unaffordability problem of high initial down payment.

The authors also expect that a lower monthly initial amount with a longer tenure can ease the burden among the low-income borrowers by reducing their consumption on housing.

This paper provides a non-interest Islamic cooperative mortgage and lower monthly initial amount with a longer tenure for the low- and middle-income borrowers.