Ahmed Z. Al-Garni, Wael G. Abdelrahman and Ayman M. Abdallah
The purpose of this paper is to formulate a specialized artificial neural network algorithm utilizing radial basis function (RBF) for modeling of time to failure of aircraft…
Abstract
Purpose
The purpose of this paper is to formulate a specialized artificial neural network algorithm utilizing radial basis function (RBF) for modeling of time to failure of aircraft engine turbines.
Design/methodology/approach
The model uses training failure data collected from operators of turboprop aircraft working in harsh desert conditions where sand erosion is a detrimental factor in reducing turbine life. Accordingly, the model is more suited to accurate prediction of life of critical components of such engines. The used RBF employs a closest neighbor type of classifier and the hidden unit’s activation is based on the displacement between the early prototype and the input vector.
Findings
The results of the algorithm are compared to earlier work utilizing Weibull regression modeling, as well as Feed Forward Back Propagation NN. The results show that the failure rates estimated by RBF more closely match actual failure data than the estimations by both other models. The trained model showed reasonable accuracy in predicting future failure events. Moreover, the technique is shown to have comparatively higher efficiency even with reduced number of neurons in each layer of ANN. This significantly decreases computation time with minimum effect on the accuracy of results.
Originality/value
Using RBF technique significantly decreases the computational time with minimum effect on the accuracy of results.
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Dana Barghouth, Ghaith M. Al-Abdallah and Ayman Bahjat Abdallah
This study aims to examine the effects of pharmacy service factors (namely, medication teaching, service promptness, pharmacist attitudes, medication supply and pharmacy location…
Abstract
Purpose
This study aims to examine the effects of pharmacy service factors (namely, medication teaching, service promptness, pharmacist attitudes, medication supply and pharmacy location) on patient satisfaction with community pharmacies in Jordan and to explore the effect of patient satisfaction on pharmacy performance.
Design/methodology/approach
Descriptive analytical methodology, with a quantitative approach using survey strategy was applied. The study population represented the whole population of Jordan (2.033 million households). Data were collected using an online questionnaire. A convenient quota sample of 1,000 respondents was targeted; 502 valid questionnaires were returned, representing an effective response rate of 50.2%. The study hypotheses were tested using path analysis.
Findings
The results showed that the service factors contributing most significantly to patient satisfaction in Jordan are medication supply, pharmacist attitudes, medication teaching and service promptness, in descending order of influence. Meanwhile, the effect of pharmacy location on patient satisfaction proved to be insignificant. In addition, patient satisfaction proved to have a highly positive impact on pharmacy performance.
Originality/value
This study addresses a debatable issue in the literature regarding the influence that pharmacy service factors can have on patient satisfaction. In addition, to the best of the researchers’ knowledge, this is the first study to explore the proposed effects in Jordan. It is also one of the first to investigate the effect of patient satisfaction on community pharmacy performance.
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Ayman Bahjat Abdallah, Omar Mohammad Rawadiah, Walaa Al-Byati and Salah Alhyari
The purpose of this study is to examine the effect of supply chain integration (SCI) in terms of supplier, customer and internal integration on supply chain performance (SCP) and…
Abstract
Purpose
The purpose of this study is to examine the effect of supply chain integration (SCI) in terms of supplier, customer and internal integration on supply chain performance (SCP) and export performance (EXP). The effect of SCP on EXP is also explored. This study further seeks to examine the mediating effect of SCP on the relationship between the types of SCI and EXP.
Design/methodology/approach
The population of this study consists of manufacturing companies in different industries in Jordan. Data were gathered using self-administered questionnaires; managers from 271 companies responded to the survey. The study constructs were assessed for validity and reliability, and it was ensured that acceptable levels of these tests were obtained. Structural equation modeling (SEM) was used to test the study hypotheses.
Findings
The findings showed that supplier and customer integration were not drivers of EXP, but internal integration positively impacted EXP. In addition, internal and customer integration positively affected SCP, while supplier integration did not. Also, SCP positively impacted EXP. Furthermore, customer integration and internal integration indirectly impacted EXP through SCP.
Practical implications
Manufacturers should establish both intra- and inter-organizational collaborations to improve their performance. Specifically, managers in developing countries need to pay substantial attention to internal integration, as it is the key antecedent of both SCP and EXP. Furthermore, managers must be aware of the essential role of customer integration in improving SCP and subsequently EXP. Therefore, they should make long-term plans to integrate and incorporate key customers. In addition, managers are advised to reconsider their current relationships with suppliers. By failing to take advantage of the valuable expected contribution of supplier integration, manufacturers may lose export opportunities to international competitors.
Originality/value
The present study addresses an evident gap in the available literature regarding the effect of SCI on EXP. It tests a comprehensive model underlining the role of SCP on the relationship between SCI types and EXP. This study is also valuable because it was conducted in a developing country. Generally, manufacturing companies in developing countries face more SC-related difficulties than those in developed countries; these challenges can limit the export abilities of manufacturers in developing countries. The study offers important implications for the managers of manufacturing companies to improve their SCP and, subsequently enhance their EXP.
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Ayman Bahjat Abdallah, Salah Alhyari and Nour A. Alfar
This study examines the impact of supply chain quality management (SCQM) on supply chain integration (SCI), operational performance (OP) and market performance (MP). The mediating…
Abstract
Purpose
This study examines the impact of supply chain quality management (SCQM) on supply chain integration (SCI), operational performance (OP) and market performance (MP). The mediating impacts of SCI and OP on the SCQM–MP relationship are also explored and the indirect impact of SCQM on OP via SCI is investigated.
Design/methodology/approach
The study population included all Jordanian manufacturing firms. Data were collected through self-administered questionnaires filled out by a randomly selected sample of 267 participants from various industries. The model of this study was assessed for validity and reliability, which were found to be satisfactory. Research hypotheses were tested using structural equation modeling (SEM) with Analysis of a Moment Structures (AMOS) software.
Findings
The findings have important implications for the direct and indirect impacts of SCQM on MP. While the direct impact was found to be insignificant, SCI and OP were found to fully mediate the SCQM–MP relationship. The findings also demonstrated that the impact of SCI on OP was insignificant; likewise, the mediating impact of SCI on SCQM–OP was insignificant.
Originality/value
This study fills a knowledge gap regarding the impact of SCQM on MP. This study is one of the first studies to explore the mediating impacts of SC and operational capabilities in terms of SCI and OP on the SCQM–MP relationship. This study is also one of the first to explore the indirect impact of SCQM on OP via SCI. This study conceptualizes SCQM as collaborative quality management (OP) practices that are externally focused to include upstream and downstream members of the SC.
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Ahmad Fathi Al-Sa’di, Ayman Bahjat Abdallah and Samer Eid Dahiyat
The purpose of this paper is to investigate the effects of knowledge management (KM) on product and process innovations, as well as on operational performance (OP). In addition…
Abstract
Purpose
The purpose of this paper is to investigate the effects of knowledge management (KM) on product and process innovations, as well as on operational performance (OP). In addition, the effects of product and process innovations on OP, as well as their mediating effects on the relationship between KM and OP, are also investigated.
Design/methodology/approach
A questionnaire-based survey was designed and used to collect data from 207 manufacturing companies operating in the Jordanian capital Amman. To assess construct validity, exploratory and confirmatory factor analyses were conducted. To test research hypotheses, the bootstrap re-sampling method was applied using Hayes’s SPSS multiple-mediator PROCESS macro.
Findings
The results indicate that KM has significant positive effects on product and process innovations, and OP. Process innovation was found to have a significant positive effect on OP, while product innovation was not. Furthermore, only process innovation was found to significantly mediate the KM-OP relationship.
Practical implications
The findings of this study provide useful insights about the role of KM in facilitating and enhancing product and process innovations, as well as OP in the surveyed manufacturing companies. An important implication concerns the roles of product and process innovations. Manufacturing companies seeking improvements in their OP are recommended to focus on process innovation rather than product innovation. While product innovation may affect other aspects of performance, such as market and financial ones, it was not found to significantly affect OP. Process innovation can also leverage KM’s contribution to manufacturing companies’ OP.
Originality/value
This is a pioneering study in that it developed an integrated model that depicts the interrelationships among KM, product innovation and process innovation and OP, in a developing country context.
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Ayman Bahjat Abdallah, Rasha Zuhair Alkhaldi and Majed M. Aljuaid
The purpose of the current study is to address a debatable issue in the extant literature regarding lean management (LM), innovation and operational performance (OP) relationships…
Abstract
Purpose
The purpose of the current study is to address a debatable issue in the extant literature regarding lean management (LM), innovation and operational performance (OP) relationships in the manufacturing SMEs. It conceptualizes LM in terms of social and technical aspects and investigates their effects on process innovation, management innovation and OP. The mediating roles of process and management innovations on social/technical-OP relationships are also explored.
Design/methodology/approach
The study analyzes survey data gathered from 268 manufacturing SMEs belonging to different industry types in Jordan. Validity and reliability tests of the first and second order constructs were performed. Structural equation modeling (SEM) was used to test the study hypotheses.
Findings
Both social and technical LM were found to positively affect OP. Social LM positively affected both process and management innovations. However, the effect of technical LM on both types of innovation was not significant. In addition, process and management innovations positively mediated social LM-OP relationship. Nonetheless, neither type of innovation showed mediating effects on technical LM-OP relationship.
Originality/value
This study is one of the first to highlight the proposed relationships, in general, and in the context of SMEs in a developing country context, in particular. It offers important implications for the managers of SMEs to benefit from LM implementation and avoid its failure, enhance innovation efforts by focusing on social LM practices and subsequently achieve higher levels of OP.
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Ayman Bahjat Abdallah and Israa Hussein Nabass
The purpose of this paper is to determine supply chain practices that contribute most to the success of agile manufacturing (AM), and to examine their effects on its…
Abstract
Purpose
The purpose of this paper is to determine supply chain practices that contribute most to the success of agile manufacturing (AM), and to examine their effects on its implementation levels in the Jordanian manufacturing sector. It also investigates the effect of AM on operational performance (OP).
Design/methodology/approach
The study is based on survey data collected from 294 manufacturing companies from different industry types in Jordan. Validity and reliability analyses were performed using SPSS and AMOS, and the study hypotheses were tested using structural equation modeling.
Findings
The results revealed that supplier involvement, internal integration, and modularization of products positively and significantly affect AM. Customer involvement and postponement were insignificantly related to AM. Further, the results demonstrated that AM positively and significantly affect OP.
Originality/value
A limited number of previous studies investigated supply chain antecedents of AM. Further, there is no consensus among researchers on these practices. In addition, this area is underinvestigated in the developing countries in general and in Jordan in particular. The current study contributes to the literature by determining the most commonly linked supply chain practices to AM and examining their effects on its implementation levels in the context of a developing country, Jordan.
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Rasha Zuhair Alkhaldi and Ayman Bahjat Abdallah
The purpose of this paper is to examine the impact of lean management (LM) on operational performance (OP) in the context of health care in Jordanian private hospitals. LM is…
Abstract
Purpose
The purpose of this paper is to examine the impact of lean management (LM) on operational performance (OP) in the context of health care in Jordanian private hospitals. LM is measured using four bundles: total quality management (TQM), human resource management (HRM), just-in-time system (JIT) and total productive maintenance (TPM). The study also investigates the effects of OP dimensions on hospitals’ business performance (BP).
Design/methodology/approach
The study is based on survey data collected from 260 respondents from 25 private hospitals in Jordan. Validity and reliability analyses were performed using SPSS and Amos, and the study hypotheses were tested using structural equation modeling.
Findings
The study found that the TQM bundle affects quality performance positively, but does not affect efficiency and accessibility performances, while the HRM bundle positively affects all OP dimensions. Furthermore, the JIT bundle positively contributes to both efficiency and accessibility performances, while the TPM bundle positively influences quality and accessibility performances. Moreover, the results have demonstrated that OP dimensions of quality and accessibility significantly and positively affect hospitals’ BP.
Originality/value
This study is one of the first to adapt the four lean bundles popularized in the manufacturing sector and apply them in a health-care context. It examines the effects of the four lean bundles on hospitals’ OP in terms of efficiency, quality and accessibility. In addition, the study demonstrates the role of OP dimensions in improving private hospitals’ BP.
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Sara S. Badran and Ayman Bahjat Abdallah
The present research aims to investigate how lean project management (LPM) and agile project management (APM) affect project performance outcomes in the construction sector in…
Abstract
Purpose
The present research aims to investigate how lean project management (LPM) and agile project management (APM) affect project performance outcomes in the construction sector in Jordan. This study focuses on six key project performance outcomes, namely cost, time, quality, client satisfaction, innovation and responsiveness.
Design/methodology/approach
The present study employed a quantitative approach to achieve the research objectives. Accordingly, a multi-item survey questionnaire was prepared to gather data from 392 project managers from construction companies in Jordan. The study’s model showed acceptable levels regarding reliability, validity, fit indices and discriminant validity. In order to test the hypotheses of this study, path analysis was employed using Amos 24.0 software.
Findings
LPM demonstrated a remarkably high positive impact on cost performance. It also positively affected quality performance and client satisfaction. However, LPM insignificantly affected time, innovation and responsiveness performance measures. On the other hand, APM showed a notably high positive impact on innovation and responsiveness. The findings also revealed that APM positively impacted quality performance and client satisfaction. In addition, APM negatively impacted cost performance and insignificantly impacted time performance.
Originality/value
This study is one of the first comprehensive studies to empirically examine the impact of both LPM and APM on various project performance outcomes in the construction industry in the context of a developing country. It reveals some similarities and differences between LPM and APM with regard to their impacts on project management outcomes. The findings are expected to guide managers in selecting the appropriate project management approach based on the desired performance outcomes. Accordingly, it offers important implications for project managers in construction companies.
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Rasha Zuhair Alkhaldi and Ayman Bahjat Abdallah
The present study conceptualizes total quality management (TQM) in terms of soft and hard aspects and examines their effects on quality performance and patient satisfaction. The…
Abstract
Purpose
The present study conceptualizes total quality management (TQM) in terms of soft and hard aspects and examines their effects on quality performance and patient satisfaction. The indirect effects of soft and hard TQM on patient satisfaction through quality performance are also investigated.
Design/methodology/approach
A multi-item questionnaire was prepared to gather primary data from a sample of 312 medical employees in private hospitals in Jordan. The measurement model was evaluated for validity and reliability and determined to be acceptable. Structural equation modeling (SEM) was applied to test the research hypotheses.
Findings
The results revealed that soft TQM has a strong positive effect on quality performance and patient satisfaction. Hard TQM was found to positively affect quality performance but to a lesser extent compared to soft TQM. The effect of hard TQM on patient satisfaction, meanwhile, was not significant. Quality performance positively mediated the relationship between TQM – both soft and hard – and patient satisfaction.
Originality/value
This study is one of the first to conceptualize TQM in terms of soft and hard aspects in a health care context. It offers valuable insights for managers of private hospitals looking to enhance quality performance and patient satisfaction. The results reveal that soft TQM is the primary driver of quality performance and patient satisfaction in the health care context, which is in stark contrast to the manufacturing sector.