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Topic Review
Circular Material Usage Strategies and Principles in Buildings
Building construction accounts for a significant proportion of global greenhouse gas emissions, raw material extraction, and waste production. Applying circular economy (CE) principles in the building construction industry would considerably reduce these values. However, uptake by the industry is relatively slow, which is largely attributed to sectoral barriers, including limitations in knowledge and experience.
  • 238
  • 01 Mar 2024
Topic Review
Organic Rankine Cycles and Absorption Cooling Systems
One of the main consequences of the irrational use of energy systems, mainly of those with direct or indirect use of fossil fuels, is climate change, whose effects on the planet have been studied in recent decades and today are well known. In the last decades, a strategy well promoted to counteract such effects is the transition to systems using renewable energy sources, such as solar energy, which can be used to produce electricity through the well-known photovoltaic technologies, or heat through the different solar thermal devices. These energy sources are of interest to the present research work.
  • 203
  • 01 Mar 2024
Topic Review
Implementing and Testing a U-Space System
One of the main goals of the Labyrinth project was to develop and test the path planning algorithms that supported the conflict resolution services of a U-space-based Unmanned Traffic Management (UTM) system. To test these services in real scenarios, a UTM prototype was developed. The U-space concept of operations (ConOps) provides a high-level description of the architecture, requirements and functionalities of these systems, but the implementer has a certain degree of freedom in aspects like the techniques used or some policies and procedures.
  • 143
  • 01 Mar 2024
Topic Review
Acoustic Emissions in Crack Detection
Acoustic emissions (AE) are becoming an important tool for hydraulic turbine failure detection and troubleshooting. In particular, artificial intelligence is a promising signal analysis research hotspot, and it has a great potential in the condition monitoring of hydraulic turbines using acoustic emissions as a key factor in the digitalisation process. 
  • 142
  • 01 Mar 2024
Topic Review
Characteristics of Contemporary Hip Resurfacing Arthroplasty Endoprostheses
The goals of hip resurfacing arthroplasty (HRA) are restoring joint anatomy, biomechanics, and function while prolonging the life of a patient with endoprosthesis by preserving bone stock for easy further possible revision arthroplasty in the form of traditional total hip arthroplasty. Over decades of its history, the designs of HRA endoprostheses have undergone a variety of technological innovations in terms of evolution in materials and fixation techniques, which often resulted in promising outcomes and the extension of implant survival. 
  • 199
  • 29 Feb 2024
Topic Review
E-Commerce User Experience in the Last-Mile Delivery
The role of last-mile delivery implies the complexity of managing the flood of parcels in cities, along with the demands for and complexity of omnichannel retailing. The last-mile delivery process involves different stakeholders, such as consumers, logistics providers, and retailers. The last-mile delivery concept presents a chain of storage and transport process steps. Each chain starts at the depot and ends with a handover element. The process chain consists of one or multiple transport and storage process steps moving the shipments closer to the customer. Customer experience in the last-mile delivery process can be a key factor in a customer’s decision to return to the same retailer or brand. Customers are increasingly looking for reliable delivery, as well as flexibility in choosing the time and place of delivery. For this reason, retailers and logistics service providers (courier services) need to focus on providing an efficient and quality experience in the last-mile delivery process to meet customer needs and maintain competitiveness. In addition, the user experience in the product delivery process plays a key role in increasing the user satisfaction.
  • 189
  • 29 Feb 2024
Topic Review
Building Associated Fungi and How to Find Them
The number of buildings experiencing humidity problems and fungal growth appears to be increasing as energy-saving measures and changes in construction practices and climate become more common. Determining the cause of the problem and documenting the type and extent of fungal growth are complex processes involving both building physics and indoor mycology. The most reported building-associated fungi across all materials are Penicillium chrysogenum and Aspergillus versicolor. Chaetomium globosum is common on all organic materials, whereas Aspergillus niger is common on all inorganic materials.
  • 186
  • 29 Feb 2024
Topic Review
Fundamentals of Laser Shock Peening
With the rapid development of the advanced manufacturing industry, equipment requirements are becoming increasingly stringent. Since metallic materials often present failure problems resulting from wear due to extreme service conditions, researchers have developed various methods to improve their properties. Laser shock peening (LSP) is a highly efficacious mechanical surface modification technique utilized to enhance the microstructure of the near-surface layer of metallic materials, which improves mechanical properties such as wear resistance and solves failure problems.
  • 120
  • 29 Feb 2024
Topic Review
Photovoltaic Integration with the Saudi Electricity Grid
Due to uncertain photovoltaic (PV) power generation, analyzing the voltage stability of transmission networks with a large PV plant is challenging. The stability of PV output power is a critical factor in establishing PV penetration levels in active transmission networks when assessing loading capabilities. 
  • 224
  • 29 Feb 2024
Topic Review
Role of Hydrogen in Energy Transformation
Hydrogen, with its potential to decarbonize various sectors, has emerged as a key player in achieving decarbonization and energy sustainability goals. The outlook for hydrogen is characterized by an increasingly central role in the global effort to transition towards a sustainable and low-carbon energy future. 
  • 321
  • 29 Feb 2024
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