41 research outputs found

    Vehicle as a Service (VaaS): Leverage Vehicles to Build Service Networks and Capabilities for Smart Cities

    Full text link
    Smart cities demand resources for rich immersive sensing, ubiquitous communications, powerful computing, large storage, and high intelligence (SCCSI) to support various kinds of applications, such as public safety, connected and autonomous driving, smart and connected health, and smart living. At the same time, it is widely recognized that vehicles such as autonomous cars, equipped with significantly powerful SCCSI capabilities, will become ubiquitous in future smart cities. By observing the convergence of these two trends, this article advocates the use of vehicles to build a cost-effective service network, called the Vehicle as a Service (VaaS) paradigm, where vehicles empowered with SCCSI capability form a web of mobile servers and communicators to provide SCCSI services in smart cities. Towards this direction, we first examine the potential use cases in smart cities and possible upgrades required for the transition from traditional vehicular ad hoc networks (VANETs) to VaaS. Then, we will introduce the system architecture of the VaaS paradigm and discuss how it can provide SCCSI services in future smart cities, respectively. At last, we identify the open problems of this paradigm and future research directions, including architectural design, service provisioning, incentive design, and security & privacy. We expect that this paper paves the way towards developing a cost-effective and sustainable approach for building smart cities.Comment: 32 pages, 11 figure

    Application of Artificial Neural Networks to geological classification: porphyry prospectivity in British Columbia and oil reservoir properties in Iran

    Get PDF
    Seismic facies analysis aims to classify oil and gas reservoirs into geologically and petrophysically meaningful rock groups, or classes. An artificial neural network (ANN) is a versatile and efficient tool for classifying data or estimating subsurface properties from large geophysical datasets. This tool can provide critical information for oilfield development and reservoir characterization. This study includes application of artificial neural networks on two different datasets: 1) geophysical characterization of an oil reservoir in Iran and 2) geological prospectivity for porphyry in British Columbia, Canada. In the first case study, I utilize seismic attributes, well-log data, and core data analysis and use supervised machine learning techniques to efficiently estimate the acoustic impedance and porosity of the reservoir and to classify it into four lithological classes. Seismic attributes as inputs for our techniques capture the lithological patterns or structural characteristics in the seismic amplitude, phase, frequency, and other complex seismic properties that cannot be directly seen in the original seismic images. Selection of an optimal set of input features from the vast number of possible mathematical transformations of seismic data is a critical task for reservoir property prediction and classification. This selection is performed by standard as well as innovative procedures employing properties of the target classes. Three different supervised approaches to non-linear classification are used: 1) the so-called probabilistic neural network (PNN), 2) conventional ANN, and 3) an ANN with the new approach of optimal attribute selection. For each of these approaches, images of classification confidence levels and confidence-filtered class images are produced. Assessments of the robustness and accuracy of seismic facies classification is performed for each of these algorithms. The ANN classifiers are validated using validation and test data subsets. The proposed algorithm shows a higher performance, particularly in comparison with the PNN algorithm. Several visualization techniques are used to examine and illustrate the power of the ANN-based approaches to classify the seismic facies with high accuracy. However, the three approaches still provide significantly different levels of lateral continuity, frequency content, and classification accuracy. Therefore, some level of expert assessment is still required when using machine learning for reservoir interpretation. In the second case study, I use an ANN to explore the prospectivity for porphyry within the Quesnel Terrane, BC, Canada. A purely data-driven approach based on geophysical, structural, and volcanic-age data results in a predictive prospectivity map which correlates well with known mineral occurrences and suggests new areas for potential exploration

    Large space structures and systems in the space station era: A bibliography with indexes (supplement 03)

    Get PDF
    Bibliographies and abstracts are listed for 1221 reports, articles, and other documents introduced into the NASA scientific and technical information system between January 1, 1991 and June 30, 1991. Topics covered include large space structures and systems, space stations, extravehicular activity, thermal environments and control, tethering, spacecraft power supplies, structural concepts and control systems, electronics, advanced materials, propulsion, policies and international cooperation, vibration and dynamic controls, robotics and remote operations, data and communication systems, electric power generation, space commercialization, orbital transfer, and human factors engineering

    Bioprocess Systems Engineering Applications in Pharmaceutical Manufacturing

    Get PDF
    Biopharmaceutical and pharmaceutical manufacturing are strongly influenced by the process analytical technology initiative (PAT) and quality by design (QbD) methodologies, which are designed to enhance the understanding of more integrated processes. The major aim of this effort can be summarized as developing a mechanistic understanding of a wide range of process steps, including the development of technologies to perform online measurements and real-time control and optimization. Furthermore, minimization of the number of empirical experiments and the model-assisted exploration of the process design space are targeted. Even if tremendous progress has been achieved so far, there is still work to be carried out in order to realize the full potential of the process systems engineering toolbox. Within this reprint, an overview of cutting-edge developments of process systems engineering for biopharmaceutical and pharmaceutical manufacturing processes is given, including model-based process design, Digital Twins, computer-aided process understanding, process development and optimization, and monitoring and control of bioprocesses. The biopharmaceutical processes addressed focus on the manufacturing of biopharmaceuticals, mainly by Chinese hamster ovary (CHO) cells, as well as adeno-associated virus production and generation of cell spheroids for cell therapies

    Aerial Vehicles

    Get PDF
    This book contains 35 chapters written by experts in developing techniques for making aerial vehicles more intelligent, more reliable, more flexible in use, and safer in operation.It will also serve as an inspiration for further improvement of the design and application of aeral vehicles. The advanced techniques and research described here may also be applicable to other high-tech areas such as robotics, avionics, vetronics, and space

    Journal of Telecommunications and Information Technology, 2008, nr 4

    Get PDF
    kwartalni

    5th International Conference on Advanced Research Methods and Analytics (CARMA 2023)

    Full text link
    Research methods in economics and social sciences are evolving with the increasing availability of Internet and Big Data sources of information. As these sources, methods, and applications become more interdisciplinary, the 5th International Conference on Advanced Research Methods and Analytics (CARMA) is a forum for researchers and practitioners to exchange ideas and advances on how emerging research methods and sources are applied to different fields of social sciences as well as to discuss current and future challenges.Martínez Torres, MDR.; Toral Marín, S. (2023). 5th International Conference on Advanced Research Methods and Analytics (CARMA 2023). Editorial Universitat Politècnica de València. https://doi.org/10.4995/CARMA2023.2023.1700

    Cyber Security of Critical Infrastructures

    Get PDF
    Critical infrastructures are vital assets for public safety, economic welfare, and the national security of countries. The vulnerabilities of critical infrastructures have increased with the widespread use of information technologies. As Critical National Infrastructures are becoming more vulnerable to cyber-attacks, their protection becomes a significant issue for organizations as well as nations. The risks to continued operations, from failing to upgrade aging infrastructure or not meeting mandated regulatory regimes, are considered highly significant, given the demonstrable impact of such circumstances. Due to the rapid increase of sophisticated cyber threats targeting critical infrastructures with significant destructive effects, the cybersecurity of critical infrastructures has become an agenda item for academics, practitioners, and policy makers. A holistic view which covers technical, policy, human, and behavioural aspects is essential to handle cyber security of critical infrastructures effectively. Moreover, the ability to attribute crimes to criminals is a vital element of avoiding impunity in cyberspace. In this book, both research and practical aspects of cyber security considerations in critical infrastructures are presented. Aligned with the interdisciplinary nature of cyber security, authors from academia, government, and industry have contributed 13 chapters. The issues that are discussed and analysed include cybersecurity training, maturity assessment frameworks, malware analysis techniques, ransomware attacks, security solutions for industrial control systems, and privacy preservation methods

    Innovative Methods and Materials in Structural Health Monitoring of Civil Infrastructures

    Get PDF
    In the past, when elements in sructures were composed of perishable materials, such as wood, the maintenance of houses, bridges, etc., was considered of vital importance for their safe use and to preserve their efficiency. With the advent of materials such as reinforced concrete and steel, given their relatively long useful life, periodic and constant maintenance has often been considered a secondary concern. When it was realized that even for structures fabricated with these materials that the useful life has an end and that it was being approached, planning maintenance became an important and non-negligible aspect. Thus, the concept of structural health monitoring (SHM) was introduced, designed, and implemented as a multidisciplinary method. Computational mechanics, static and dynamic analysis of structures, electronics, sensors, and, recently, the Internet of Things (IoT) and artificial intelligence (AI) are required, but it is also important to consider new materials, especially those with intrinsic self-diagnosis characteristics, and to use measurement and survey methods typical of modern geomatics, such as satellite surveys and highly sophisticated laser tools
    corecore