Sustainability has become of great interest in many fields, especially in production systems due to the continual increase in the scarcity of raw materials and environmental awareness. Recent literature has given significant attention to considering the three sustainability pillars (i.e., environmental, economic, and social sustainability) in solving production planning problems. Therefore, the present study conducts a review of the literature on sustainable production planning to analyze the relationships among different production planning problems (e.g., scheduling, lot sizing, aggregate planning, etc.) and the three sustainability pillars. In addition, we analyze the identified studies based on the indicators that define each pillar. The results show that the literature most frequently addresses production scheduling problems while it lacks studies on aggregate production planning problems that consider the sustainability pillars. In addition, there is a growing trend towards obtaining integrated solutions of different planning problems, e.g., combining production planning problems with maintenance planning or energy planning. Additionally, around 45% of the identified studies considered the integration of the economic and the environmental pillars in different production planning problems. In addition, energy consumption and greenhouse gas emissions are the most frequent sustainability indicators considered in the literature, while less attention has been given to social indicators. Another issue is the low number of studies that have considered all three sustainability pillars simultaneously. The finidings highlight the need for more future research towards holistic sustainable production planning approaches.
13 September 2024 in Computers & Industrial Engineering
Background: Five roots, three trunks, six divisions (three anterior and three posterior), three cords, and five branches make up the brachial plexus. Supraclavicular, infraclavicular (ICB), or axillary brachial plexus blocks are often used in regional anaesthesia for distal upper limb operations. The well-known and straightforward retroclavicular route for brachial plexus anaesthesia is used. One of the methods for numbing the brachial plexus is the retroclavicular block. In this method, the needle was placed above the clavicle's midpoint. It is a great option for hand and elbow surgery. Objective: This review article compared the needle visualisation, success rate, and timing of the beginning of the sensory and motor block in supraclavicular and retroclavicular brachial plexus blocks. Methods: Supraclavicular approach, Retroclavicular approach and Brachial plexus block were searched for in PubMed, Google and Google Scholar. Only the most current or comprehensive study was included after the authors thoroughly filtered references from the pertinent literature, which comprised all the recognised studies and reviews. Conclusion: Supraclavicular approach has better needle visualization than retroclavicular approach and better success rate but has shorter duration of both sensory and motor block.