Saudi Cultural Missions Theses & Dissertations
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Item Restricted Investigation of IoT Technology for Civil Infrastructure towards Smart Cities(Saudi Digital Library, 2023-12-17) Almansour, Alhussain; Jianchun, liSmart cities have become one of the major innovations and technological progress. The Internet of Things (IoT) is central to this transformation paradigm. This dissertation sought to explore the IoT architecture and applications in smart cities, identify challenges, investigate the opportunities IoT presents and enhance quality of life. Based on the findings, recommendations are made for future research and policy development. The review of literature examines the concepts of IoT, and smart cities conceptualized by different authors. The review establishes that while a smart city is a relatively new concept in urban development, it has attracted substantial research interest in the recent past. This dissertation aimed to provide a more nuanced understanding of the architectural foundations of IoT based on its application in smart cities. The methodology included a systematic search and selection of secondary data sources published between 2018 and 2023. The search results were analysed thematically. The findings established that the architecture of IoT through sensors and actuators explains the connectivity nature of smart cities. Smart city systems are designed to allow for interoperability and integration for a seamless flow of data, analysis, and automated decisions. IoT allows for the scalability and security of smart city systems and people. It is applied to enhance urban mobility, public safety and environmental sustainability. However, IoT technologies come with challenges such as privacy and security concerns, cyberattack threats and environmental sustainability. The study recommends that city authorities and policymakers increasingly leverage IoT technology to seize inherent opportunities such as better economic growth and enhanced quality of city life28 0Item Restricted Smart Cities as Alternative Digital Solutions for a More Sustainable Liveable Future at the Urban Level in the UK and Europe(Saudi Digital Library, 2023-12-06) Alkahtany, Faisal; Kao, Ping-JenThe current study specifically focuses on exploring the potential of sensors used in smart cities, which is an alternative digital solution, and how using sensors in smart cities can ensure a sustainable, liveable future at the urban level of the UK and Europe and the fundamental difference between Smart cities and typical cities.18 0Item Restricted The Development of a Broadband Hydrophone System for Comparison with a Narrow Band System(Saudi Digital Library, 2023-03-28) Almutrafi, Meshari Abdulmohsen; Legg, MathewGovernments have collaborated with community groups, NGOs, individuals, and business organizations in protecting endangered animal species. Scientists depend on advanced acoustic tracking technologies in examining animal behaviors within their natural habitats. Scientists consider Hector and Maui dolphins as endangered and rare subspecies requiring protection from human activities and climate change. Specifically, human activities like recreation, fishing, and ocean pollution have caused a significant decline in these dolphins’ populations. As a result, marine biologists have developed underwater acoustic sensors to examine the presence and behaviors of dolphins within the New Zealand coastline. New acoustic detection technologies utilize designs that address uniqueness in the dolphins’ ultrasonic pulses and performance. Hence, we intended to develop a hydrophone system that effectively detects Hector’s/Māui dolphins’ NBHF echolocation clicks. The experimental research entails developing and designing a broadband hydrophone system to enhance the tracking process for Hector and Maui dolphins. The hydrophone system was designed to sense the NBHF echolocation clicks of these dolphin subspecies, which is within a 120-125 kHz frequency range. The Altium Designer was utilized in designing the PCB, which was eventually printed in China. The printed PCB was tested using the Ltspice (stage 1), using an oscilloscope and a function generator (stage 2), and using a transducer in a submerged state (stage 3). A graphical representation of frequency output allowed the researcher to make an inference about the PCB’s performance. The LTspice software indicated that the developed PCB detected a frequency range of 100hz-150kHz and an intensity of 50 dB-52 dB. The test using a function generator and an oscilloscope indicated that the PCB detected the generated frequency efficiently. The last test phase indicates that Teledyne Reson TC4013-4 is inaccurate frequencies below 130kHz. The designed broadband hydrophone system detects frequencies in the 100hz150kHz range. The broadband hydrophone system is effective in detecting frequencies within the 120-125 kHz range. The experimental research indicates that the broadband system can detect NBHF echolocation clicks generated by Hector/Maui dolphins.13 0