Anchor-Assisted and Vote-Based Trustworthiness Assurance in Smart City Crowdsensing

Smart city sensing calls for crowdsensing via mobile devices that are equipped with various built-in sensors. As incentivizing users to participate in distributed sensing is still an open research issue, the trustworthiness of crowdsensed data is expected to be a grand challenge if this cloud-inspired recruitment of sensing services is to be adopted. Recent research proposes reputation-based user recruitment models for crowdsensing; however, there is no standard way of identifying adversaries in smart city crowdsensing. This paper adopts previously proposed vote-based approaches, and presents a thorough performance study of vote-based trustworthiness with trusted entities that are basically a subset of the participating smartphone users. Those entities are called trustworthy anchors of the crowdsensing system. Thus, an anchor user is fully trustworthy and is fully capable of voting for the trustworthiness of other users, who participate in sensing of the same set of phenomena. Besides the anchors, the reputations of regular users are determined based on vote-based (distributed) reputation. We present a detailed performance study of the anchor-based trustworthiness assurance in smart city crowdsensing through simulations, and compare it with the purely vote-based trustworthiness approach without anchors, and a reputation-unaware crowdsensing approach, where user reputations are discarded. Through simulation findings, we aim at providing specifications regarding the impact of anchor and adversary populations on crowdsensing and user utilities under various environmental settings. We show that significant improvement can be achieved in terms of usefulness and trustworthiness of the crowdsensed data if the size of the anchor population is set properl

Power Consumption Analysis, Measurement, Management, and Issues:A State-of-the-Art Review of Smartphone Battery and Energy Usage

The advancement and popularity of smartphones have made it an essential and all-purpose device. But lack of advancement in battery technology has held back its optimum potential. Therefore, considering its scarcity, optimal use and efficient management of energy are crucial in a smartphone. For that, a fair understanding of a smartphone's energy consumption factors is necessary for both users and device manufacturers, along with other stakeholders in the smartphone ecosystem. It is important to assess how much of the device's energy is consumed by which components and under what circumstances. This paper provides a generalized, but detailed analysis of the power consumption causes (internal and external) of a smartphone and also offers suggestive measures to minimize the consumption for each factor. The main contribution of this paper is four comprehensive literature reviews on: 1) smartphone's power consumption assessment and estimation (including power consumption analysis and modelling); 2) power consumption management for smartphones (including energy-saving methods and techniques); 3) state-of-the-art of the research and commercial developments of smartphone batteries (including alternative power sources); and 4) mitigating the hazardous issues of smartphones' batteries (with a details explanation of the issues). The research works are further subcategorized based on different research and solution approaches. A good number of recent empirical research works are considered for this comprehensive review, and each of them is succinctly analysed and discussed

Law in the present future : approaching the legal imaginary of smart cities with science (and) fiction

This doctoral research concerns smart cities, describing digital solutions and social issues related to their innovative technologies, adopted models, and major projects around the world. The many perspectives mentioned in it were identified by online tools used for the textual analysis of two databases that were built from relevant publications on the main subject by authors coming from media and academia. Expected legal elements emerged from the applied process, such as privacy, security, transparency, participation, accountability, and governance. A general review was produced on the information available about the public policies of Big Data in the two municipal cases of Rio de Janeiro and Montréal, and their regulation in the Brazilian and Canadian contexts. The combined approaches from science and literature were explored to reflect on the normative concerns represented by the global challenges and local risks brought by urban surveillance, climate change, and other neoliberal conditions. Cyberpunk Science Fiction reveals itself useful for engaging with the shared problems that need to be faced in the present time, all involving democracy. The results achieved reveal that this work was, in fact, about the complex network of practices and senses between (post)modern law and the imaginary of the future.Cette recherche doctorale centrée sur les villes intelligentes met en évidence les solutions numériques et les questionnements sociétaux qui ont trait aux technologies innovantes, ainsi qu’aux principaux modèles et projets développés autour d’elles à travers le monde. Des perspectives multiples en lien avec ces développements ont été identifiées à l’aide d’outils en ligne qui ont permis l’analyse textuelle de deux bases de données comprenant des publications scientifiques et des écrits médiatiques. De ce processus analytique ont émergé des éléments juridiques relatifs aux questions de vie privée, de sécurité, de transparence, de participation, d’imputabilité et de gouvernance. De plus, à partir de ces informations a été réalisée une revue des politiques publiques relatives aux mégadonnées dans les villes de Rio de Janeiro et de Montréal, ainsi que des réglementations nationales du Canada et du Brésil en lien avec ce sujet. Finalement, à travers l’exploration d’écrits scientifiques et fictionnels de la littérature, les principaux enjeux normatifs soulevés localement et mondialement par la surveillance urbaine, les changements climatiques et les politiques néolibérales ont pu être mis à jour. Le courant cyberpunk de la science-fiction s’est avéré particulièrement utile pour révéler les principaux problèmes politiques, en lien avec la préservation de la démocratie, auxquelles sont confrontées nos sociétés présentement. Les résultats de la recherche démontrent finalement la présence d’un réseau de pratiques et de significations entre le droit (post)moderne et les représentations imaginaires du futur

Social Innovation in Sustainable Urban Development

How can a city advance from social invention to social innovation, to attain sustainable urban development (SUD)? Many new ideas, initiatives, and showcases for social innovation have been introduced; however, project-based forms of experimentation are often just part of the ongoing urban politics (or governmentality), and consequently somewhat ephemeral, with traditional siloed city administrations remaining a central obstacle to SUD. Our Special Issue presents twelve papers that address the question of social innovation in sustainable urban development from very different angles. The contributions span issues concerning smart cities, innovation in the adaptive reuse of urban heritage, as well as policy options for regions in transition. In terms of social innovation for SUD purposes, the presented solutions range from transferable legal formalizations to the creation of urban ecosystems whose institutional structures ensure the inclusion of the civil society. Instead of a comprehensive, integrative SUD, robust sectoral solutions, or even phased solutions, are more likely to be sought

Evaluation of Trust in the Internet Of Things: Models, Mechanisms And Applications

In the blooming era of the Internet of Things (IoT), trust has become a vital factor for provisioning reliable smart services without human intervention by reducing risk in autonomous decision making. However, the merging of physical objects, cyber components and humans in the IoT infrastructure has introduced new concerns for the evaluation of trust. Consequently, a large number of trust-related challenges have been unsolved yet due to the ambiguity of the concept of trust and the variety of divergent trust models and management mechanisms in different IoT scenarios. In this PhD thesis, my ultimate goal is to propose an efficient and practical trust evaluation mechanisms for any two entities in the IoT. To achieve this goal, the first important objective is to augment the generic trust concept and provide a conceptual model of trust in order to come up with a comprehensive understanding of trust, influencing factors and possible Trust Indicators (TI) in the context of IoT. Following the catalyst, as the second objective, a trust model called REK comprised of the triad Reputation, Experience and Knowledge TIs is proposed which covers multi-dimensional aspects of trust by incorporating heterogeneous information from direct observation, personal experiences to global opinions. The mathematical models and evaluation mechanisms for the three TIs in the REK trust model are proposed. Knowledge TI is as “direct trust” rendering a trustor’s understanding of a trustee in respective scenarios that can be obtained based on limited available information about characteristics of the trustee, environment and the trustor’s perspective using a variety of techniques. Experience and Reputation TIs are originated from social features and extracted based on previous interactions among entities in IoT. The mathematical models and calculation mechanisms for the Experience and Reputation TIs also proposed leveraging sociological behaviours of humans in the real-world; and being inspired by the Google PageRank in the web-ranking area, respectively. The REK Trust Model is also applied in variety of IoT scenarios such as Mobile Crowd-Sensing (MCS), Car Sharing service, Data Sharing and Exchange platform in Smart Cities and in Vehicular Networks; and for empowering Blockchain-based systems. The feasibility and effectiveness of the REK model and associated evaluation mechanisms are proved not only by the theoretical analysis but also by real-world applications deployed in our ongoing TII and Wise-IoT projects

Empowering citizens in the development of smart cities: the Cork case

Cities around the world are piloting combinations of technologies to develop smart cities. As an urban management and governance trend, the smart city idea has moved from concept to mainstream within the past decade. As end-users of public services, interactive subjects of physical systems, and generators of data and information, citizens/residents should also be key contributors of ideas for policy-making processes and co-creators of city solutions. However, citizens/residents are not always empowered to engage in the development of smart city initiatives. Greater engagement, with timely input from citizens, can be achieved with the development of more efficient and effective mechanisms for the collection and analysis of stakeholders’ feedback. Gaps around the involvement of citizens in all the steps of smart city initiatives have been identified as key challenges in successful scaling up of the smart city initiatives in pioneering cities Using Cork City, the second largest city in the south-east of Ireland, this thesis establishes the key components and factors in how to effectively engage and empower local citizens in the development of smart city through the Cork Smart Gateway (CSG) initiative. Within the CSG, the researcher generated primary data sets to set up a baseline of Cork citizens/residents’ participation practices and perceptions, digital skills and usage and awareness of the smart city projects and local infrastructure. From city-wide surveys of inclusive citizen/resident groups, the baseline showed that (1) local citizens/residents (N=3600) value a shared and collaborative vision of their participation in public issues; they believe that they have positive impact on their city, but they don’t have many opportunities to participate in the local decision-making. Other findings include (2) two-thirds of the citizens/residents volunteer in community and public activities and those who volunteered in the activities have high willingness to participate in smart city projects; (3) citizens/residents use and want to be contacted via email and mobile text message; and (4) hardware access (i.e. tablet or computer) is still a problem for both urban and rural areas, and the problem can be solved by better investment in public libraries and offices. The research also shows that (5) self-reported digital skills of urban residents are not as proficient as their peers in rural areas and the need for computer/tablet access is high in both areas. A qualitative analysis of the research shows a strong awareness about challenges and solutions to address them among the movers and shakers of the city, including members of the CSG steering group. An experiment carried out during the data collection process shows that crowdsourcing could work as an instrument to activate people’s participation in public good activities. This is replicable, cheaper than using professional services, and effective to engage and raise awareness among local people. Overall, the findings provide Cork City leaders with empirical evidence to develop strategies and tools to stimulate, engage, and maintain citizen engagement in their smart city initiative. Besides the key factors, the research also uncovers some challenging issues around the engagement and empowerment of citizens/residents, some contradicting with the existing literature. The research contributes new learnings for empowering citizens/residents in the development of smart city – new ICT and technologies enabled contexts – while identifying areas for future research such as institutional requirements, data management, and citizens’ data privacy and security for further research

The right to have digital rights in smart cities

This book is a reprint of the Special Issue Social Innovation in Sustainable Urban Development that was published in Sustainabilit

Toward an integrated smart sustainable urbanism framework in the historic centre of Baghdad. (Old Rusafa as a case study)

According to Batty “Despite a century of effort, our understanding of how cities evolve is still woefully inadequate” (Batty, 2008). The form of the city has been changing as the complexity of its systems has increased. Its varied aspects and methods have included ICT, smart transport systems, and the Intelligent Community Forum (ICF) for example. In the pursuit of smart sustainable urban form in heritage cities such as Baghdad, the research will analyse the concept of ‘smart sustainable city’, taking into account urban conservation, use, and reuse of historic places, buildings and cultural environments. The capital, Baghdad, is the largest city in Iraq. The population of Baghdad as of 2017 is approximately 8,000,000, making it the second largest city in the Arab world after Cairo, Egypt. There are four historic areas of the modern city of Baghdad: Rusafa, Karkh, Adhamiya and Kadhimiya. The area of Old Rusafa represents the main historic centre of Baghdad. Its unique urban fabric defines this area and is surrounded by modern urban pattern and by modern roads, which replaced its walls. Generally speaking, in most of the traditional areas in Baghdad city and especially the area of Old Rusafa, due to the lack of standard infrastructures, the deteriorating built environment and rundown houses, air pollution and a lack of modern facilities, the younger generation is abandoning these areas (Al-Akkam, 2012a). Nowadays, most residents are low-income families who cannot afford to live in better sectors with higher rent. Such problems have brought into focus the extent to which a smart and sustainable urban design framework can be able to provide appropriate solutions to regenerate the traditional urban fabric regarding urban form, land use, transportation, and create a new vision to deal with the social and economic processes. However, the significant features in the historic part of Baghdad such as narrow alleys, natural shading, the hierarchy between public and private space, mixed-use, human scale pattern, high density/low rise living, a walkable and zero carbon environment are providing an extraordinary base to implement smart and sustainable standards. Unfortunately, there is a tremendous amount of evidence of a decline in the social function of historic urban fabric and traditional Iraqi houses of Old Rusafa (Al-Akkam, 2013b). Thus, this research will illustrate how ICT and smart sustainable design might transform the historic urban environment in the traditional area of Rusafa to be both smart and sustainable. This research first offers a review of the process of urban transformation in the context of city change through utilising urban morphology to explain how Baghdad transformed from a geometric city to an organic form and then from a traditional city to the modern metropolis. Then it will assess the physical and social conditions of the old area of Rusafa as a case study by using quantitative and qualitative methods, which are both essential for evaluating the situation in the traditional urban fabric. The research then will present the criteria for smart and sustainable urban design processes, as its primary contribution, to propose a method to fill a gap related to the use of ‘Smart and Sustainable City’ in a historic environment and furthermore, to determine the positive and negative aspects (opportunities and constraints) to the historic centre of Baghdad. In the final stage, this research will produce a smart and sustainable urban design framework for Old Rusafa and will introduce some guidance for future development to highlight opportunities and control constraints. The results lead us to state that, the different demands of such an area (Old Rusafa) present unique challenges for which sustainability and digital techniques potentially provide new methods of regeneration. It also helps to find the positive and negative aspects that can serve as a platform to resolve the conflicting values of traditional urban form and modern design models. The findings of this research provide insights into the cases that urban designers, policy-makers, technology companies and governments should consider in devising regeneration solutions and endeavours dealing with historic cities, aiming to integrate traditional principles with contemporary needs and provide a new vision for rethinking the way cities are designed, built, and managed. The primary implications will be summarised in two outcomes, the implementation of smart and sustainable urban design in a historic environment and the degree of amenability of the historic centre (Old Rusafa) for smart and sustainable regeneration