Ahmed Ibrahim

The research aims to explore the impact of capacity management on the performance of manufacturing operations within Iraqi industrial companies, given the increasing pressures to enhance production efficiency and keep pace with rapid technological developments in capacity management. In addition, the research seeks to understand how capacity management improves process performance. Data was collected by distributing questionnaires to 52 administrators and technicians in one of the Iraqi industrial companies. The results indicated a positive impact of capacity management practices on improving the performance of operations. It was noted that the company applies capacity management effectively and efficiently to improve operations performance. They contribute to reducing costs and increasing profitability. The research recommends developing and using key performance indicators (KPIs) to measure continuous improvements in capacity efficiency and process performance to ensure continuous improvement and effective follow-up.

The market’s demand for high-quality products necessitates innovative manufacturing approaches that emphasize flexibility, adaptability, and the reduction of defects. Traditional systems are currently evolving towards embracing I4.0 technologies, including data collection, processing, analytics and digital twin, aiming for zero-defect manufacturing quality. This paper introduces an open platform, compliant with RAMI4.0 standards, designed to improve manufacturing quality. The platform integrates data using Asset Administration Shells with microservices adaptation for data ingestion and advanced analytics. Additionally, it incorporates Non-Destructive Inspection tools, demonstrating a seamless integration of measurement and quality assurance. This study details the architectural specification and validation of the openZDM platform, employing microservices to ensure flexibility, modularity and scalability, aligning with the RAMI4.0 model. The platform was validated through deployment in an automotive assembly line, highlighting its effectiveness in integrating inspection scenarios and early defect detection tools. The architecture employs a choreographed approach to manage loosely coupled microservices, enabling efficient data lifecycle management from collection through analytics to visualization.

Islamic legal historiography has dealt extensively with questions of continuity and change, as epitomized by the relationship between ijtihād and taqlīd. This paper offers a new conceptualization of the ijtihād–taqlīd modes of law-making in the Sunni legal tradition. I argue that the institutional transformation from ijtihād to taqlīd required that jurists transform the views of the founding authorities of the schools over the course of the eleventh through thirteenth centuries. They achieved this by stratifying legal knowledge in their typologies of muftis and judges in ways that had not been envisioned earlier, justifying their typologies by invoking tropes of decline and the extinction of mujtahids. This longue-durée view will shed light on the institutional significance of the taqlīdification of Islamic law, where legal security and stability were privileged over judicial discretion.

The primary and secondary sources of Islamic law often assume a binary distinction between ijtihād and taqlīd, ignoring a third level of engagement with the sources, which was conceptualized by some jurists as forming a distinct category. In this article I discuss the evolution of the terms ijtihād, taqlīd, and ittibāʿ, using a conceptual-historical approach. I argue that the use of taqlīd to mean “precedent-following” did not emerge as a technical term until after the time of al-Shāfiʿī. The distinction between precedent-following and verifiable-following did not appear in legal discourse until the time of Aḥmad b. Ḥanbal. I also demonstrate that there were three approaches to these terms in legal discourse after the time of Ibn Ḥanbal, with three groups of jurists defining them in ways that advanced their different visions of law-making. I conclude with a discussion of the debate over the meanings of these terms in the eighteenth and nineteenth centuries.