242 research outputs found
Perception Intelligence Integrated Vehicle-to-Vehicle Optical Camera Communication.
Ubiquitous usage of cameras and LEDs in modern road and aerial vehicles open up endless opportunities for novel applications in intelligent machine navigation, communication, and networking. To this end, in this thesis work, we hypothesize the benefit of dual-mode usage of vehicular built-in cameras through novel machine perception capabilities combined with optical camera communication (OCC). Current key conception of understanding a line-of-sight (LOS) scenery is from the aspect of object, event, and road situation detection. However, the idea of blending the non-line-of-sight (NLOS) information with the LOS information to achieve a see-through vision virtually is new. This improves the assistive driving performance by enabling a machine to see beyond occlusion. Another aspect of OCC in the vehicular setup is to understand the nature of mobility and its impact on the optical communication channel quality. The research questions gathered from both the car-car mobility modelling, and evaluating a working setup of OCC communication channel can also be inherited to aerial vehicular situations like drone-drone OCC. The aim of this thesis is to answer the research questions along these new application domains, particularly, (i) how to enable a virtual see-through perception in the car assisting system that alerts the human driver about the visible and invisible critical driving events to help drive more safely, (ii) how transmitter-receiver cars behaves while in the mobility and the overall channel performance of OCC in motion modality, (iii) how to help rescue lost Unmanned Aerial Vehicles (UAVs) through coordinated localization with fusion of OCC and WiFi, (iv) how to model and simulate an in-field drone swarm operation experience to design and validate UAV coordinated localization for group of positioning distressed drones. In this regard, in this thesis, we present the end-to-end system design, proposed novel algorithms to solve the challenges in applying such a system, and evaluation results through experimentation and/or simulation
Recommended from our members
Sonic heritage: listening to the past
History is so often told through objects, images and photographs, but the potential of sounds to reveal place and space is often neglected. Our research project âSonic Palimpsestâ1 explores the potential of sound to evoke impressions and new understandings of the past, to embrace the sonic as a tool to understand what was, in a way that can complement and add to our predominant visual understandings. Our work includes the expansion of the Oral History archives held at Chatham Dockyard to include womenâs voices and experiences, and the creation of sonic works to engage the public with their heritage. Our research highlights the social and cultural value of oral history and field recordings in the transmission of knowledge to both researchers and the public. Together these recordings document how buildings and spaces within the dockyard were used and experienced by those who worked there. We can begin to understand the social and cultural roles of these buildings within the community, both past and present
Powering the future: a comprehensive review of battery energy storage systems
Global society is significantly speeding up the adoption of renewable energy sources and their integration into the current existing grid in order to counteract growing environmental problems, particularly the increased carbon dioxide emission of the last century. Renewable energy sources have a tremendous potential to reduce carbon dioxide emissions because they practically never produce any carbon dioxide or other pollutants. On the other hand, these energy sources are usually influenced by geographical location, weather, and other factors that are of stochastic nature. The battery energy storage system can be applied to store the energy produced by RESs and then utilized regularly and within limits as necessary to lessen the impact of the intermittent nature of renewable energy sources. The main purpose of the review paper is to present the current state of the art of battery energy storage systems and identify their advantages and disadvantages. At the same time, this helps researchers and engineers in the field to find out the most appropriate configuration for a particular application. This study offers a thorough analysis of the battery energy storage system with regard to battery chemistries, power electronics, and management approaches. This paper also offers a detailed analysis of battery energy storage system applications and investigates the shortcomings of the current best battery energy storage system architectures to pinpoint areas that require further study.This publication is part of the project TED2021-132864A-I00, funded by MCIN/ AEI/10.13039/501100011033 and by the European Union âNextGenerationEUâ/PRTRâ.Peer ReviewedPostprint (published version
METROPOLITAN ENCHANTMENT AND DISENCHANTMENT. METROPOLITAN ANTHROPOLOGY FOR THE CONTEMPORARY LIVING MAP CONSTRUCTION
We can no longer interpret the contemporary metropolis as we did in the last century. The thought of civil economy regarding the contemporary Metropolis conflicts more or less radically with the merely acquisitive dimension of the behaviour of its citizens. What is needed is therefore a new capacity for
imagining the economic-productive future of the city: hybrid social enterprises, economically sustainable, structured and capable of using technologies, could be a solution for producing value and distributing it fairly and inclusively.
Metropolitan Urbanity is another issue to establish. Metropolis needs new spaces where inclusion can occur, and where a repository of the imagery can be recreated. What is the ontology behind the technique of metropolitan planning and management, its vision and its symbols? Competitiveness,
speed, and meritocracy are political words, not technical ones. Metropolitan Urbanity is the characteristic of a polis that expresses itself in its public places. Today, however, public places are private ones that are destined for public use. The Common Good has always had a space of representation in the city, which was the public space. Today, the Green-Grey Infrastructure is the metropolitan city's monument that communicates a value for future generations and must therefore be recognised and imagined; it is the production of the metropolitan symbolic imagery, the new magic of the city
Two Searches for Signals of Dark Matter with the ATLAS Detector in 139 ifb of LHC = 13 TeV Proton-Proton Collision Data
This dissertation presents two searches for signals of dark matter in an integrated luminosity of 139 ifb of proton-proton collision data collected at a center of mass energy of = 13 TeV with the ATLAS detector at the Large Hadron Collider (LHC). The search for direct pair production of the supersymmetric partner to the top quark (the stop) in the all-hadronic plus missing transverse momentum final state yields no significant excess over the expected Standard Model background and was able to exclude stop masses up to 1.25 TeV for dark matter candidate masses below 200 GeV. The search for dark mesons decaying into top and bottom quarks is sensitive to a proposed strongly coupled dark sector which contains a viable dark matter candidate scalar baryon. This analysis considers the all-hadronic channel of a final state of all top and bottom quarks ( or ) with no additional missing transverse momentum. No previous LHC searches have considered this dark meson model and we expect to provide new constraints on dark pion masses of up to 500 GeV
Investigating the potential of renewable energy in community-based disaster risk reduction and development
In recent years, there has been growing interest in community hazard resilience and sustainable development at the local level. Initiatives that accord with the principles of the Agenda 2030 for Sustainable Development and the Sendai Framework for Disaster Risk Reduction increasingly frame community resilience research and programming. However, there has been little research to date exploring energy and water hazard management within remote communities. Such research is an important element in progressing sustainable development at the local level - understanding community views, priority needs and solutions that are feasible and sustainable in their context. Humanitarian engineering is an appropriate vehicle for translating these views into proposed solutions and offers substantial benefits to interventions for sustainable development and disaster resilience. Community-centered initiatives for off-grid renewable energy generation and flood response at the local level have the potential to support community hazard management and socio-economic growth. To do so effectively, they must support genuine community engagement and stakeholder synergies. The current study examined energy and flood response needs in riparian communities in Nepal and Greece and identified specific options which could be co-developed and sustained in these contexts. Paper I presents evidence-informed technical criteria for the development of off-grid renewable energy and early warning hybrid systems, and more specifically, small-scale hydropower generators combined with flood warning systems. Paper II is a scoping review of the literature examining riparian communities in low and lower middle-income countries, and their use of off-grid renewable energy and flood warning systems. Paper III presents a review of the extant literature regarding best practice community engagement for localised renewable energy systems and flood early warning systems. Paper IV details an exploratory investigation of community vulnerability and capability mapping that identifies communities with high water-based disaster risk and their associated needs. Paper V presents a mixed method approach for humanitarian and development research engagement that allows the collection of information from both professionals and non-experts remotely. Paper VI is informed by the previous studies (Papers I â V) and presents findings from our research on flood response and energy needs of two riparian communities in Nepal and Greece. The findings indicate combined functions are favoured and that the co-development of a hybrid unit for hydropower generation and flood warning is preferred compared to single-use market available options. The remote research approach (detailed in Paper V) supported effective participant engagement and data collection despite pandemic restrictions
Recommended from our members
Novel information and data exchange within power systems using enhanced blockchain technologies
This thesis was submitted for the award of Doctor of Philosophy and was awarded by Brunel University LondonCurrent energy systems are primarily designed for centralized power generation and supplying bulk electricity to users with stable and predictable usage patterns. However, with the increasing penetration of renewable energy sources (RES), future energy systems will require greater flexibility and wider distribution of both demand and supply. Integrating RES on a large scale poses challenges to the hosting capacity of distribution systems. To address these challenges, the digitalization of energy systems through novel Information and Communication Technologies (ICT) infrastructure is essential. The shift from centralized to highly distributed systems necessitates increased coordination and communication efforts. This is because a distributed system is composed of multiple independent entities that need to communicate and collaborate effectively to accomplish a shared objective. Coordination and communication are necessary to ensure that the system is operating efficiently and effectively.
Traditional centralized cloud-based data exchange schemes depend on a single trusted third party, this may lead to single-point failure and lack of data privacy and access control. To overcome these issues, a novel approach is proposed for exchanging data within power systems using blockchain technology. This approach enables users to securely exchange data while maintaining ownership. The experiments conducted demonstrate that the proposed approach can handle more users and enables information and data exchange within power systems.
Secondly, this thesis proposes an Artificial Neural Network (ANN) based prediction model to optimize the performance of the blockchain-enabled data exchange approach. A use case for exchanging data within the power system is implemented on the proposed platform using various performance metrics. The results of the proposed approach are compared to two other schemes: the baseline scheme and an optimized scheme. The evaluation results indicate that the proposed approach can enhance network performance when compared to the baseline and optimized schemes.
In summary, the proposed novel approach to ICT infrastructure for successfully exchanging information and data within power systems entities. The performance of the novel approach is evaluated based on the ability to handle multiple users, scalability, reliability, and security
When Children Draw Gods
This open access book explores how children draw god. It looks at childrenâs drawings collected in a large variety of cultural and religious traditions. Coverage demonstrates the richness of drawing as a method for studying representations of the divine. In the process, it also contributes to our understanding of this concept, its origins, and its development. This intercultural work brings together scholars from different disciplines and countries, including Switzerland, Japan, Russia, Iran, Brazil, and the Netherlands. It does more than share the results of their research and analysis. The volume also critically examines the contributions and limitations of this methodology. In addition, it also reflects on the new empirical and theoretical perspectives within the broader framework of the study of this concept. The concept of god is one of the most difficult to grasp. This volume offers new insights by focusing on the many different ways children depict god throughout the world. Readers will discover the importance of spatial imagery and color choices in drawings of god. They will also learn about how the divine's emotional expression correlates to age, gender, and religiosity as well as strategies used by children who are prohibited from representing their god
- âŠ