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Topic Review
Mapping and Monitoring Informal Settlements Using RS Technologies
Research on the detection of informal settlements has increased since 1990s owing to the availability of high- to very-high-spatial-resolution satellite imagery. The achievement of development goals, such as the Sustainable Development Goals, requires access to up-to-date information on informal settlements.
  • 275
  • 27 Sep 2023
Topic Review
Specific Sensors in Downwind Fire and Smoke Detection
Wildfires have played an increasing role in wreaking havoc on communities, livelihoods, and ecosystems globally, often starting in remote regions and rapidly spreading into inhabited areas where they become difficult to suppress due to their size and unpredictability. In sparsely populated remote regions where freshly ignited fires can propagate unimpeded, the need for distributed fire detection capabilities has become increasingly urgent.
  • 229
  • 27 Sep 2023
Topic Review
Biodiesel Production from Fish Waste
Biofuels including biodiesel, bioethanol, biobutanol, biohydrogen, etc., are generated from different biological sources, and their waste which stands as the best alternative in the present scenario. Specifically, the utilization of biological wastes as raw materials for the production of biofuels is considered as best waste management practice. To date, most of the biodiesel production research has been carried out with plant, algal, and microbial samples, or their waste. It is a well-known fact that diesel can also be produced from specific oily fish and their waste using different methods. In addition, fish waste constitutes a major quantity compared to other food waste which is a serious concern. Furthermore, the disposal of fish waste shows an impact on both the environment and the economy. Hence, the development of protocols for the efficient production of biodiesel from fish waste is the ultimate goal. 
  • 399
  • 26 Sep 2023
Topic Review
The Drivers and Barriers of Green Ports
Ports play an increasingly significant role in fostering regional economic growth and international trade as a key hub of the transportation network. Ports now provide cities, regions, and nations with a vital strategic resource for taking part in global economic cooperation and competitiveness, in addition to providing space for transportation, logistics, and a way to connect with the outside world. Green ports are presented as an achievable solution to the energy issue and environmental degradation. A green port is a port that not only satisfies environmental criteria but also provides economic benefits. Green ports are an excellent strategy to reduce environmental pollution and ecological harm, as well as to maintain the ports’ water resources and natural environment.
  • 542
  • 26 Sep 2023
Topic Review
Higher Education Institutes on Community-Level Climate Action Plans
To drive a radical change toward a zero-carbon transition at the city scale, massive decarbonization is required at the institutional level (academic/non-academic campus) of a city. Among all the nongovernmental actors, it is always expected that Higher Education Institutes (HEIs) would take the lead in promoting a resilient and sustainable future for the cities through their education, research, and innovation. HEIs’ multidimensional activity resembles the “small scale model of a city” interacting with different subsystems like education, administration, transport, housing, health, etc. 
  • 158
  • 26 Sep 2023
Topic Review
Green Artificial Intelligence and Digitalization Facilitate
Green AI (Artificial Intelligence) and digitalization facilitate the “Dual-Carbon” goal of low-carbon, high-quality economic development. Green AI is moving from “cloud” to “edge” devices like TinyML, which supports devices from cameras to wearables, offering low-power IoT computing. 
  • 243
  • 26 Sep 2023
Topic Review
Treatment Methods for Dye-Contaminated Effluents
Advancements in textile dyeing technologies have introduced novel categories of dyes that have deleterious effects on ecosystems. Primarily, azo dyes represent the majority of synthetic dyes employed in textiles and in the realms of culinary and miscellaneous applications. Traditionally, these dyes infiltrate the environment via discharged contaminated effluents such as wastewater from industrial facilities. The contaminated discharged effluent exerts a pervasive impact on ecosystems, engendering pernicious afflictions in both human and faunal populations. Several treatment methodologies are employed for the eradication of contaminants from natural water resources and wastewater, encompassing all phases within water and wastewater treatment infrastructures. The evolution of each treatment stage is intricately linked to the escalating demand for potable water of impeccable quality. Water treatment methods such as Coagulation and Flocculation, Photocatalytic Degradation, Ion Exchange, Electrochemical Technique, Membrane Filtration, Electrodialysis Process, Biodegradation Techniques, and Adsorption are covered in detail, alongside the impacts of bio-based activated carbon as an adsorbent for azo dye. 
  • 468
  • 26 Sep 2023
Topic Review
Computer-Vision-Based Water Level Measurement
Water level measurement is an important component of hydrological monitoring and water resources management. Information such as runoff, water supply volumes and flood discharge is usually calculated based on water level measurement. To alleviate the problems associated with manual and contact measurements, the computer-vision-based approaches rely on the automatic acquisition and analysis of water surface images. Images allow the capture of water surfaces without interruption to provide insight into the continuous change of water level. Computer vision can automatically acquire and understand the meaningful information in images, such as the scope of water surface area, water line, gauge characters, etc., to obtain faster recognition speed and more accurate and stable results than human in the water level measurement task.
  • 750
  • 26 Sep 2023
Topic Review
Water Reuse
Wastewater treatment and reuse has passed through different development stages with time. Based on archeological evidence and time records, the awareness of the Greeks regarding land disposal, irrigation, and water reuse is highlighted. The latter has evolved into a plethora of applications, with Direct Potable Reuse (DPR) representing one of the last modern frontiers.
  • 191
  • 25 Sep 2023
Topic Review
Measurement of Urban Sprawl
In the context of rapid urbanization, inefficient, disorderly, and low-density urban sprawl often leads to resource waste and ecological damage. Over the decades, many studies on the measurement, analysis, and governance of urban sprawl have emerged. 
  • 259
  • 25 Sep 2023
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