17 research outputs found

    Enabling technologies for urban smart mobility: Recent trends, opportunities and challenges

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    The increasing population across the globe makes it essential to link smart and sustainable city planning with the logistics of transporting people and goods, which will significantly contribute to how societies will face mobility in the coming years. The concept of smart mobility emerged with the popularity of smart cities and is aligned with the sustainable development goals defined by the United Nations. A reduction in traffic congestion and new route optimizations with reduced ecological footprint are some of the essential factors of smart mobility; however, other aspects must also be taken into account, such as the promotion of active mobility and inclusive mobility, encour-aging the use of other types of environmentally friendly fuels and engagement with citizens. The Internet of Things (IoT), Artificial Intelligence (AI), Blockchain and Big Data technology will serve as the main entry points and fundamental pillars to promote the rise of new innovative solutions that will change the current paradigm for cities and their citizens. Mobility‐as‐a‐service, traffic flow optimization, the optimization of logistics and autonomous vehicles are some of the services and applications that will encompass several changes in the coming years with the transition of existing cities into smart cities. This paper provides an extensive review of the current trends and solutions presented in the scope of smart mobility and enabling technologies that support it. An overview of how smart mobility fits into smart cities is provided by characterizing its main attributes and the key benefits of using smart mobility in a smart city ecosystem. Further, this paper highlights other various opportunities and challenges related to smart mobility. Lastly, the major services and applications that are expected to arise in the coming years within smart mobility are explored with the prospective future trends and scope

    Anomaly Detection of Smart Meter Data

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    Presently, households and buildings use almost one-third of total energy consumption among all the power consumption sources. This trend is continuing to rise as more and more buildings install smart meter sensors and connect to the Smart Grid. Smart Grid uses sensors and ICT technologies to achieve an uninterrupted power supply and minimize power wastage. Abnormalities in sensors and faults lead to power wastage. Along with that studying the consumption pattern of a building can lead to a substantial reduction in power wastage which can save millions of dollars. According to studies, 20\% of energy consumed by buildings are wasted due to the above factors. In this work, we propose an anomaly detection approach for detecting anomalies in the power consumption of smart meter data from an open dataset of 10 houses from Ausgrid Corporation Australia. Since the power consumption may be affected by various factors such as weather conditions during the year, it was necessary to search for a way to discover the anomalies, considering seasonal periods such as weather seasons, day/night and holidays. Consequently, the first part of this thesis is to identify the outliers and obtain data with labels (normal or anomalous). We use Facebook prophet algorithm along with power consumption domain knowledge to detect anomalies for two years of half-hour sampled data. After generating the dataset with anomaly labels, we proposed a method to classify future power consumptions as anomalous or normal. We use four different approaches using machine learning for classifying anomalies. We also measure the run-time of different classification algorithms. We are able to achieve a G-mean score of 97 per cent

    FIN-DM: finantsteenuste andmekaeve protsessi mudel

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    Andmekaeve hĂ”lmab reeglite kogumit, protsesse ja algoritme, mis vĂ”imaldavad ettevĂ”tetel iga pĂ€ev kogutud andmetest rakendatavaid teadmisi ammutades suurendada tulusid, vĂ€hendada kulusid, optimeerida tooteid ja kliendisuhteid ning saavutada teisi eesmĂ€rke. Andmekaeves ja -analĂŒĂŒtikas on vaja hĂ€sti mÀÀratletud metoodikat ja protsesse. Saadaval on mitu andmekaeve ja -analĂŒĂŒtika standardset protsessimudelit. KĂ”ige mĂ€rkimisvÀÀrsem ja laialdaselt kasutusele vĂ”etud standardmudel on CRISP-DM. Tegu on tegevusalast sĂ”ltumatu protsessimudeliga, mida kohandatakse sageli sektorite erinĂ”uetega. CRISP-DMi tegevusalast lĂ€htuvaid kohandusi on pakutud mitmes valdkonnas, kaasa arvatud meditsiini-, haridus-, tööstus-, tarkvaraarendus- ja logistikavaldkonnas. Seni pole aga mudelit kohandatud finantsteenuste sektoris, millel on omad valdkonnapĂ”hised erinĂ”uded. Doktoritöös kĂ€sitletakse seda lĂŒnka finantsteenuste sektoripĂ”hise andmekaeveprotsessi (FIN-DM) kavandamise, arendamise ja hindamise kaudu. Samuti uuritakse, kuidas kasutatakse andmekaeve standardprotsesse eri tegevussektorites ja finantsteenustes. Uurimise kĂ€igus tuvastati mitu tavapĂ€rase raamistiku kohandamise stsenaariumit. Lisaks ilmnes, et need meetodid ei keskendu piisavalt sellele, kuidas muuta andmekaevemudelid tarkvaratoodeteks, mida saab integreerida organisatsioonide IT-arhitektuuri ja Ă€riprotsessi. Peamised finantsteenuste valdkonnas tuvastatud kohandamisstsenaariumid olid seotud andmekaeve tehnoloogiakesksete (skaleeritavus), Ă€rikesksete (tegutsemisvĂ”ime) ja inimkesksete (diskrimineeriva mĂ”ju leevendus) aspektidega. SeejĂ€rel korraldati tegelikus finantsteenuste organisatsioonis juhtumiuuring, mis paljastas 18 tajutavat puudujÀÀki CRISP- DMi protsessis. Uuringu andmete ja tulemuste abil esitatakse doktoritöös finantsvaldkonnale kohandatud CRISP-DM nimega FIN-DM ehk finantssektori andmekaeve protsess (Financial Industry Process for Data Mining). FIN-DM laiendab CRISP-DMi nii, et see toetab privaatsust sĂ€ilitavat andmekaevet, ohjab tehisintellekti eetilisi ohte, tĂ€idab riskijuhtimisnĂ”udeid ja hĂ”lmab kvaliteedi tagamist kui osa andmekaeve elutsĂŒklisData mining is a set of rules, processes, and algorithms that allow companies to increase revenues, reduce costs, optimize products and customer relationships, and achieve other business goals, by extracting actionable insights from the data they collect on a day-to-day basis. Data mining and analytics projects require well-defined methodology and processes. Several standard process models for conducting data mining and analytics projects are available. Among them, the most notable and widely adopted standard model is CRISP-DM. It is industry-agnostic and often is adapted to meet sector-specific requirements. Industry- specific adaptations of CRISP-DM have been proposed across several domains, including healthcare, education, industrial and software engineering, logistics, etc. However, until now, there is no existing adaptation of CRISP-DM for the financial services industry, which has its own set of domain-specific requirements. This PhD Thesis addresses this gap by designing, developing, and evaluating a sector-specific data mining process for financial services (FIN-DM). The PhD thesis investigates how standard data mining processes are used across various industry sectors and in financial services. The examination identified number of adaptations scenarios of traditional frameworks. It also suggested that these approaches do not pay sufficient attention to turning data mining models into software products integrated into the organizations' IT architectures and business processes. In the financial services domain, the main discovered adaptation scenarios concerned technology-centric aspects (scalability), business-centric aspects (actionability), and human-centric aspects (mitigating discriminatory effects) of data mining. Next, an examination by means of a case study in the actual financial services organization revealed 18 perceived gaps in the CRISP-DM process. Using the data and results from these studies, the PhD thesis outlines an adaptation of CRISP-DM for the financial sector, named the Financial Industry Process for Data Mining (FIN-DM). FIN-DM extends CRISP-DM to support privacy-compliant data mining, to tackle AI ethics risks, to fulfill risk management requirements, and to embed quality assurance as part of the data mining life-cyclehttps://www.ester.ee/record=b547227

    A contingency management framework to mitigate cybersecurity threats to electronic health records in the public health sector in South Africa

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    Most developing countries in the African continent, including South Africa, seem to be lagging behind in research, policy development, and how to prevent cybersecurity threats. These findings are evident in the significant number of cyberattacks recorded in the Cost of Data Breach Study and Global Analysis by Ponemon Institute. Research studies are placing the blame on the element of portability in electronic health records (EHRs) that has contributed to numerous vulnerabilities to hospital healthcare data. As a result, the healthcare information of patients in those hospitals that are equipped with interconnected medical devices is exposed to cybersecurity threats. The purpose of the study was to develop a healthcare contingency management framework that can be used by healthcare institutions to mitigate cybersecurity threats to EHRs in the public health sector in South Africa. The integrated systems theory (IST) which amalgamated five different theories relating to information security management was used as a theoretical foundation in this study. In achieving this purpose, the literature review was selected as the research design best suited to answer the question presented in this research study. An expert review was used to refine the framework outcome using interviews and questionnaires. The contribution that will be made by this study will be in a form of a conceptual framework that will be used to mitigate cybersecurity threats concerning EHRs in the public health sector. The healthcare contingency management framework (HCMF) can be adopted by either the National Health Department or Provincial Health Department to be used by healthcare facilities as a guide in reviewing their support function, process management, governance management, and their contingency management. Similar future studies need to be conducted on large scale such as in the whole public sector with the focus on the health sector.Thesis (MA) -- Faculty of Management and Commerce, 202

    A contingency management framework to mitigate cybersecurity threats to electronic health records in the public health sector in South Africa

    Get PDF
    Most developing countries in the African continent, including South Africa, seem to be lagging behind in research, policy development, and how to prevent cybersecurity threats. These findings are evident in the significant number of cyberattacks recorded in the Cost of Data Breach Study and Global Analysis by Ponemon Institute. Research studies are placing the blame on the element of portability in electronic health records (EHRs) that has contributed to numerous vulnerabilities to hospital healthcare data. As a result, the healthcare information of patients in those hospitals that are equipped with interconnected medical devices is exposed to cybersecurity threats. The purpose of the study was to develop a healthcare contingency management framework that can be used by healthcare institutions to mitigate cybersecurity threats to EHRs in the public health sector in South Africa. The integrated systems theory (IST) which amalgamated five different theories relating to information security management was used as a theoretical foundation in this study. In achieving this purpose, the literature review was selected as the research design best suited to answer the question presented in this research study. An expert review was used to refine the framework outcome using interviews and questionnaires. The contribution that will be made by this study will be in a form of a conceptual framework that will be used to mitigate cybersecurity threats concerning EHRs in the public health sector. The healthcare contingency management framework (HCMF) can be adopted by either the National Health Department or Provincial Health Department to be used by healthcare facilities as a guide in reviewing their support function, process management, governance management, and their contingency management. Similar future studies need to be conducted on large scale such as in the whole public sector with the focus on the health sector.Thesis (MA) -- Faculty of Management and Commerce, 202

    interActive Environments: Designing interactions to support active behaviors in urban public space

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    interActive Environments: Designing interactions to support active behaviors in urban public space

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    Feasible, Robust and Reliable Automation and Control for Autonomous Systems

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    The Special Issue book focuses on highlighting current research and developments in the automation and control field for autonomous systems as well as showcasing state-of-the-art control strategy approaches for autonomous platforms. The book is co-edited by distinguished international control system experts currently based in Sweden, the United States of America, and the United Kingdom, with contributions from reputable researchers from China, Austria, France, the United States of America, Poland, and Hungary, among many others. The editors believe the ten articles published within this Special Issue will be highly appealing to control-systems-related researchers in applications typified in the fields of ground, aerial, maritime vehicles, and robotics as well as industrial audiences

    CITIES: Energetic Efficiency, Sustainability; Infrastructures, Energy and the Environment; Mobility and IoT; Governance and Citizenship

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    This book collects important contributions on smart cities. This book was created in collaboration with the ICSC-CITIES2020, held in San José (Costa Rica) in 2020. This book collects articles on: energetic efficiency and sustainability; infrastructures, energy and the environment; mobility and IoT; governance and citizenship

    Use of advanced analytics for health estimation and failure prediction in wind turbines

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    Tesi en modalitat de tesi per compendiThe energy sector has undergone drastic changes and critical revolutions in the last few decades. Renewable energy sources have grown significantly, now representing a sizeable share of the energy production mix. Wind energy has seen increasing rate of adoptions, being one of the more convenient and sustainable mean of producing energy. Research and innovation have helped greatly in driving down production and operation costs of wind energy, yet important challenges still remain open. This thesis addresses predictive maintenance and monitoring of wind turbines, aiming to present predictive frameworks designed with the necessities of the industry in mind. More concretely: interpretability, scalability, modularity and reliability of the predictions are the objectives —together with limited data requirements— of this project. Of all the available data at the disposal of wind turbine operators, SCADA is the principal source of information utilized in this research, due to its wide availability and low cost. Ensemble models played an important role in the development of the presented predictive frameworks thanks to their modular nature which allows to combine very diverse algorithms and data types. Important insights gained from these experiments are the beneficial effect of combining multiple and diverse sources of data —for example SCADA and alarms logs—, the easiness of combining different algorithms and indicators, and the noticeable gain in predicting performance that it can provide. Finally, given the central role that SCADA data plays in this thesis, but also in the wind energy industry, a detailed analysis of the limitations and shortcomings of SCADA data is presented. In particular, the ef- fect of data aggregation —a common practice in the wind industry— is determined developing a methodological framework that has been used to study high–frequency SCADA data. This lead to the conclusion that typical aggregation periods, i.e. 5–10 minutes that are the standard in wind energy industry are not able to capture and maintain the information content of fast–changing signals, such as wind and electrical measurements.El sector energĂštic ha experimentat importants canvis i revolucions en les Ășltimes dĂšcades. Les fonts d’energia renovables han crescut significativament, i ara representen una part important en el conjunt de generaciĂł. L’energia eĂČlica ha augmentat significativament, convertint-se en una de les millors alternatives per produir energia verda. La recerca i la innovaciĂł ha ajudat a reduir considerablement els costos de producciĂł i operaciĂł de l’energia eĂČlica, perĂČ encara hi ha oberts reptes importants. Aquesta tesi aborda el manteniment predictiu i el seguiment d’aerogeneradors, amb l’objectiu de presentar solucions d’algoritmes de predicciĂł dissenyats tenint en compte les necessitats de la indĂșstria. MĂ©s concretament conceptes com, la interpretabilitat, escalabilitat, modularitat i fiabilitat de les prediccions ho sĂłn els objectius, juntament amb els requisits limitats per les de dades disponibles d’aquest projecte. De totes les dades disponibles a disposiciĂł dels operadors d’aerogeneradors, les dades del sistema SCADA sĂłn la principal font d’informaciĂł utilitzada en aquest projecte, per la seva Ă mplia disponibilitat i baix cost. En el present treball, els models de conjunt tenen un paper important en el desenvolupament dels marcs predictius presentats grĂ cies al seu carĂ cter modular que permet l’Ășs d’algoritmes i tipus de dades molt diversos. Resultats importants obtinguts d’aquests experiments sĂłn l’efecte beneficiĂłs de combinar mĂșltiples i diverses fonts de dades, per exemple, SCADA i dades d’alarmes, la facilitat de combinar diferents algorismes i indicadors i el notable guany en predir el rendiment que es pot oferir. Finalment, donat el paper central que SCADA l’anĂ lisi de dades juga en aquesta tesi, perĂČ tambĂ© en la indĂșstria de l’energia eĂČlica, una anĂ lisi detallada de la es presenten les limitacions i les mancances de les dades SCADA. En particular es va estudiar l’efecte de l’agregaciĂł de dades -una prĂ ctica habitual en la indĂșstria eĂČlica-. Dins d’aquest treball es proposa un marc metodolĂČgic que s’ha utilitzat per estudiar dades SCADA d’alta freqĂŒĂšncia. AixĂČ va portar a la conclusiĂł que els perĂ­odes d’agregaciĂł tĂ­pics, de 5 a 10 minuts que sĂłn l’estĂ ndard a la indĂșstria de l’energia eĂČlica, no sĂłn capaços de capturar i mantenir el contingut d’informaciĂł de senyals que canvien rĂ pidament, com ara mesures eĂČliques i elĂšctriquesPostprint (published version
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