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Topic Review
Research Trends of Geopolymer Composites in Construction
Conventional cement-based composites, such as concrete and mortar, are ranked as the most used construction materials in the world. Concrete and mortar are mainly produced with ordinary Portland cement (OPC), coarse and fine aggregates, water, and additives. The widespread use of OPC by the construction industry is attributed to its impressive performance, affordability, availability, standardization, and compatibility with different types of materials and admixtures. 
  • 319
  • 07 Aug 2023
Topic Review
BSafe-360
The popularity of bicycles as a mode of transportation has been steadily increasing. However, concerns about cyclist safety persist due to a need for comprehensive data. This data scarcity hinders accurate assessment of bicycle safety and identification of factors that contribute to the occurrence and severity of bicycle collisions in urban environments. The BSafe-360, a novel multi-sensor device designed as a data acquisition system (DAS) for collecting naturalistic cycling data, which provides a high granularity of cyclist behavior and interactions with other road users.
  • 275
  • 07 Aug 2023
Topic Review
Drone Fault Detection Based on Failure Mode Databases
Drones have become an indispensable component of modern equipment systems, and as the number of components in these systems continues to increase, so does their complexity. Consequently, the requirements for system quality—particularly reliability, maintainability, and functionality—are also becoming increasingly stringent. Sensor data fusion, fault detection, fault-tolerant estimation, and fault-tolerant control are all important means of ensuring UAV safety. Among these methods, researchers tend to place particular emphasis on fault detection, which can be broadly divided into two categories: model-based approaches and data-driven approache.
  • 394
  • 07 Aug 2023
Topic Review
Frequency Control and Virtual Inertia Emulation
Integrating renewable energy through inverter-based generators has decreased the power system’s inertia. Reduced inertia may lead to frequency instability during power imbalance disturbances, particularly in an isolated power system with limited inertia. The Battery Energy Storage System (BESS) and a virtual inertia (VI) emulation control system have become popular to mitigate this issue. Nonetheless, the BESS utilization for VI emulation is highly dependent on the availability of BESS capacity, which may affect the energy cost. Therefore, developing a VI emulation control strategy that requires less energy and can recover the state of charge (SoC) to a desired level to optimize BESS utilization is required.
  • 476
  • 07 Aug 2023
Topic Review
Current Adaptive Optics Developments for Uplink Correction
Conventionally used in astronomy, adaptive optics (AO) systems measure and correct for turbulence and, therefore, have the capability to mitigate the impact of the atmosphere on the ground-to-space communication links. Historically, there have been two main streams, respectively, advocating to use or not use adaptive optics on optical communications.
  • 381
  • 07 Aug 2023
Topic Review
EfficientNetB0 cum FPN-based Semantic Segmentation of Gastrointestinal Tract
This research proposes a hybrid encoder decoder-based model for semantic segmentation of the Gastrointestinal tract. Here EfficientNet B0 is used as a bottom-up encoder architecture for downsampling to capture contextual information by extracting meaningful and discriminative features from input images. The performance of the EfficientNet B0 encoder is compared with three encoders: ResNet 50, MobileNet V2, and Timm Gernet. Here, Feature Pyramid Network (FPN) is used as a top-down decoder architecture for upsampling to recover spatial information. The performance of the FPN decoder is compared with three decoders: PAN, Linknet, and MAnet. Furthermore, the proposed hybrid model is analyzed using Adam, Adadelta, SGD, and RMSprop optimizers. 
  • 265
  • 04 Aug 2023
Topic Review
Dhaka Metro Rail
The Dhaka Metro Rail (DMR) has been constructed as part of the Dhaka Transport Coordination Authority’s 20-year Strategic Transport Plan to reduce traffic congestion in Dhaka, the capital city of Bangladesh. The DMR is the first urban rail transit system in Bangladesh and has the potential to change the existing modal share. Commuters have mixed responses about the daily commuting on the DMR and mode choice behavior.
  • 1.1K
  • 04 Aug 2023
Topic Review
Remote Sensing Techniques in Precision Agriculture
As the global population continues to increase, there will be a growing demand for food production and agricultural resources. Transition toward Agriculture 4.0 is expected to enhance agricultural productivity through the integration of advanced technologies, increase resource efficiency, ensure long-term food security by applying more sustainable farming practices, and enhance resilience and climate change adaptation. By integrating technologies such as ground IoT sensing and remote sensing, via both satellite and unmanned aerial vehicles (UAVs), and exploiting data fusion and data analytics, farming can make the transition to a more efficient, productive, and sustainable paradigm. 
  • 355
  • 04 Aug 2023
Topic Review
Soil-Borne Diseases of Flax (Linum usitatissimum)
Flax is an important crop cultivated for its seeds and fibers. It is widely grown in temperate regions, with an increase in cultivation areas for seed production (linseed) in the past 50 years and for fiber production (fiber flax) in the last decade. Among fiber-producing crops, fiber flax is the most valuable species. Linseed is the highest omega-3 oleaginous crop, and its consumption provides several benefits for animal and human health. Among biotic factors, soil-borne eukaryotic diseases pose a significant threat to both seed production and fiber quality, which highlights the economic importance of controlling these diseases. 
  • 382
  • 04 Aug 2023
Topic Review
All-Solid-State Lithium–Oxygen Batteries
All-solid-state lithium–oxygen batteries (ASSLOBs) are emerging as a promising next-generation energy storage technology with potential energy densities up to ten times higher than those of current LIBs. ASSLOBs utilize non-flammable solid-state electrolytes (SSEs) and offer superior safety and mechanical stability. However, ASSLOBs face challenges, including high solid-state interface resistances and unstable lithium-metal anodes.
  • 432
  • 04 Aug 2023
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