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Topic Review
Application of Two-fluid Mode
In two-fluid model (TFM), the granular flows are modeled as continuous fluid flows. The random motions of particles resulting from the interactive collisions of particles has a dominant effect on the flow behavior. The granular interactions are commonly modeled based on the kinetic theory of granular flow (KTGF). 
  • 710
  • 14 Feb 2022
Topic Review
Performance Assessment of Offshore Oil and Gas Platforms
Within the oil and gas (O&G) production and drilling processes of today, there are challenges in maintaining the system for numerous reasons, ranging from international competition to market globalization, regulatory compliance, and the complexity brought by technological advancement. Furthermore, with the inflating maintenance costs and increasing failure frequency impacting production safety, the issue of non-sustainability in O&G companies is made worse by surplus or inefficient maintenance. Thus, maintenance has direct sustainability-related impacts regarding social importance, influence on energy demand, exploiting physical resources, and environmental pollution. Since the performance and competitiveness of an industry are affected by reliability and environmental safety, it has become important to find a practical approach for sustainability and integrate it into maintenance processes.
  • 541
  • 10 Feb 2022
Topic Review
Model-Based Enterprise Approach in the Product Lifecycle Management
Innovations in product development and process technologies represent a promising strategy to face the increasing competitiveness of modern markets in the global economy. Also, customer requirements become more and more specific and the complexity of products is still increasing. Industries need to adopt effective solutions during the product development process and to support, for sustainable purposes, all the phases of the product lifecycle. Advanced model-based solutions emerge for digitally supporting these industrial needs. In this context, a Model-Based Enterprise (MBE) represents an organization that adopts modeling technologies, such as Model-Based Definition (MBD) solutions, to integrate and manage both technical and business processes related to product design, production, support, and retirement. Past research discusses the model-based approaches focusing on technical product development, mainly referring to the design and the manufacturing phases.
  • 1.3K
  • 08 Feb 2022
Topic Review
Microprobe System for Coordinate Metrology
A coordinate measuring machine (CMM) is a measuring instrument that can measure three-dimensional (3D) shapes of an object, including a probing system to detect an object’s surface, a positioning stage system to move either the probing system or the object, length scales to determine the coordinate of detected points by the probing system, as well as software to control the entire measurement.  Micro-coordinate measuring machines (micro-CMMs) for measuring microcomponents require a probe system with a probe tip diameter of several tens to several hundreds of micrometers. Scale effects work for such a small probe tip, i.e., the probe tip tends to stick on the measurement surface via surface adhesion forces. These surface adhesion forces significantly deteriorate probing resolution or repeatability. 
  • 621
  • 30 Jan 2022
Topic Review
Analysis of Tehran’s Air Pollution
Air pollution is one of the major issues in urban management. Researchers proposes a simulated model of the pollution level of the capital city of Tehran along with its source and outcomes based on system dynamics. 
  • 568
  • 28 Jan 2022
Topic Review
Digital Twins for Production Logistics
Digital Twins (DTs) are one of the main opportunities to strengthen the overall competitiveness of manufacturing enterprises. Various technologies and technological concepts are discussed in production logistics, which can be classified as Cyber-Physical Systems (CPS), Internet of Things (IoT), interfaces, decentralized applications, real-time localization systems, automatic identification, virtual environments including Digital Twins (DTs), and applications of data science such as machine learning, data mining, and big data analytics.
  • 629
  • 24 Jan 2022
Topic Review
Enhancing the Decision-Making Process through Industry 4.0 Technologies
In order to meet the increasingly complex expectations of customers, many companies must increase efficiency and agility. In this sense, Industry 4.0 technologies offer significant opportunities for improving both operational and decision-making processes. These developments make it possible to consider an increase in the level of operational systems and teams’ autonomy. However, the potential for strengthening the decision-making process by means of these new technologies remains unclear in the current literature. To fill this gap, a Delphi study using the Régnier Abacus technique was conducted with a representative panel of 24 experts. The novelty of this study was to identify and characterize the potential for enhancing the overall decision-making process with the main Industry 4.0 groups of technologies. Our results show that cloud computing appears as a backbone to enhance the entire decision-making process. However, certain technologies, such as IoT and simulation, have a strong potential for only specific steps within the decision-making process. This research also provides a first vision of the manager’s perspectives, expectations, and risks associated with implementing new modes of decision-making and cyber-autonomy supported by Industry 4.0 technologies.
  • 797
  • 20 Jan 2022
Topic Review
Achieving Sustainability in Solar Energy Firms in Turkey
Lean principles and sustainability are considered important terms in business. Solar firms are witnessing great competition to fulfill energy requirements, suffering from a huge amount of waste, negatively affecting the sustainability dimensions. Thus, the aim of the study is to build a framework for solar energy firms to achieve sustainability through adopting lean principles, which will help to fix many problems as waste and costs. The method included reviewing the literature to explore the founding of the relation between the two terms, and using a questionnaire that was directed to the responsible people in Turkish solar energy firms. The results of the survey were analyzed to: (1) Find out what the responsible people think about the two terms lean and sustainability; (2) Measure the probable relationship between lean principles and sustainability dimensions by applying a linear regression test; (3) Use the results of point number two to build the framework. The result showed there was a high level of relative importance about the two terms from the point of view of managers and experts in solar firms. In addition, the study found a relationship between adopting pull and flow principles of lean, and achieving economic and social dimensions of sustainability, this finding is represented in a framework. 
  • 535
  • 19 Jan 2022
Topic Review
Waste Heat Recovery Technologies Revisited with New Solutions
Waste heat recovery (WHR) has been a challenge for industries, as it can lead to energy savings, higher energy efficiency, and sustainability. WHR technologies are usually classified based on the output provided, namely heat recovery (HR) or heat-to-power (H2P) conversion. 
  • 965
  • 18 Jan 2022
Topic Review
Sustainable Manufacturing 4.0
The manufacturing industry has undergone numerous revolutions over the years, with a unanimous acceptance of the greater benefits of being sustainable. The present industrial wave—Industry 4.0—by using its enabling technologies and principles holds great potential to develop sustainable manufacturing paradigms which require balancing out the three fundamental elements—products, processes, and systems. Yet, numerous stakeholders, including industrial policy and decision makers, remain oblivious of such potential and requirements. Thus, this bibliometric study is aimed at presenting an overview of the broad field of research on the convergence of sustainable manufacturing and Industry 4.0 under the umbrella of “Sustainable Manufacturing 4.0”, which has yet to be developed. 
  • 749
  • 17 Jan 2022
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