11 research outputs found
Selected Papers from the 9th World Congress on Industrial Process Tomography
Industrial process tomography (IPT) is becoming an important tool for Industry 4.0. It consists of multidimensional sensor technologies and methods that aim to provide unparalleled internal information on industrial processes used in many sectors. This book showcases a selection of papers at the forefront of the latest developments in such technologies
Multiphase flow measurement and data analytic based on multi-modal sensors
Accurate multiphase flow measurement is crucial in the energy industry. Over
the past decades, separation of the multiphase flow into single-phase flows has
been a standard method for measuring multiphase flowrate. However, in-situ, non-invasive, and real-time imaging and measuring the key parameters of multiphase
flows remain a long-standing challenge. To tackle the challenge, this thesis first
explores the feasibility of performing time-difference and frequency-difference imaging
of multiphase flows with complex-valued electrical capacitance tomography (CVECT).
The multiple measurement vector (MMV) model-based CVECT imaging algorithm
is proposed to reconstruct conductivity and permittivity distribution simultaneously,
and the alternating direction method of multipliers (ADMM) is applied to solve
the multi-frequency image reconstruction problem. The proposed multiphase flow
imaging approach is verified and benchmarked with widely adopted tomographic
image reconstruction algorithms. Another focus of this thesis is multiphase flowrate
estimation based on low-cost, multi-modal sensors. Machine learning (ML) has
recently emerged as a powerful tool to deal with time series sensing data from multi-modal sensors. This thesis investigates three prevailing machine learning methods,
i.e., deep neural network (DNN), support vector machine (SVM), and convolutional
neural network (CNN), to estimate the flowrate of oil/gas/water three-phase flows
based on the Venturi tube. The improvement of CNN with the combination of long-short term memory machine (LSTM) is made and a temporal convolution network
(TCN) model is introduced to analyse the collected time series sensing data from the
Venturi tube installed in a pilot-scale multiphase flow facility. Furthermore, a multi-modal approach for multiphase flowrate measurement is developed by combining
the Venturi tube and a dual-plane ECT sensor. An improved TCN model is built
to predict the multiphase flowrate with various data pre-processing methods. The
results provide guidance on data pre-processing methods for multiphase flowrate
measurement and suggest that the proposed combination of low-cost flow sensing
techniques and machine learning can effectively translate the time series sensing
data to achieve satisfactory flowrate measurement under various flow conditions
Electrical Impedance Tomography: From the Traditional Design to the Novel Frontier of Wearables
Electrical impedance tomography (EIT) is a medical imaging technique based on the injection of a current or voltage pattern through electrodes on the skin of the patient, and on the reconstruction of the internal conductivity distribution from the voltages collected by the electrodes. Compared to other imaging techniques, EIT shows significant advantages: it does not use ionizing radiation, is non-invasive and is characterized by high temporal resolution. Moreover, its low cost and high portability make it suitable for real-time, bedside monitoring. However, EIT is also characterized by some technical limitations that cause poor spatial resolution. The possibility to design wearable devices based on EIT has recently given a boost to this technology. In this paper we reviewed EIT physical principles, hardware design and major clinical applications, from the classical to a wearable setup. A wireless and wearable EIT system seems a promising frontier of this technology, as it can both facilitate making clinical measurements and open novel scenarios to EIT systems, such as home monitoring
Tematski zbornik radova meÄunarodnog znaÄaja. Tom 3 / MeÄunarodni nauÄni skup âDani ArÄibalda Rajsaâ, Beograd, 10-11. mart 2016.
In front of you is the Thematic Collection of Papers presented at the International Scientific Conference âArchibald Reiss Daysâ, which was organized by the Academy of Criminalistic and Police Studies in Belgrade, in co-operation with the Ministry of Interior and the Ministry of Education, Science and Technological Development of the Republic of Serbia, National Police University of China, Lviv State University of Internal Affairs, Volgograd Academy of the Russian Internal Affairs Ministry, Faculty of Security in Skopje, Faculty of Criminal Justice and Security in Ljubljana, Police Academy âAlexandru Ioan Cuzaâ in Bucharest, Academy of Police Force in Bratislava and Police College in Banjaluka, and held at the Academy of Criminalistic and Police Studies, on 10 and 11 March 2016.
The International Scientific Conference âArchibald Reiss Daysâ is organized for the sixth time in a row, in memory of the founder and director of the first modern higher police school in Serbia, Rodolphe Archibald Reiss, PhD, after whom the Conference was named.
The Thematic Collection of Papers contains 165 papers written by eminent scholars in the field of law, security, criminalistics, police studies, forensics, informatics, as well as by members of national security system participating in education of the police, army and other security services from Belarus, Bosnia and Herzegovina, Bulgaria, China, Croatia, Greece, Hungary, Macedonia, Montenegro, Romania, Russian Federation, Serbia, Slovakia, Slovenia, Spain, Switzerland, Turkey, Ukraine and United Kingdom. Each paper has been double-blind peer reviewed by two reviewers, international experts competent for the field to which the paper is related, and the Thematic Conference Proceedings in whole has been reviewed by five competent international reviewers.
The papers published in the Thematic Collection of Papers contain the overview of contemporary trends in the development of police education system, development of the police and contemporary security, criminalistic and forensic concepts. Furthermore, they provide us with the analysis of the rule of law activities in crime suppression, situation and trends in the above-mentioned fields, as well as suggestions on how to systematically deal with these issues. The Collection of Papers represents a significant contribution to the existing fund of scientific and expert knowledge in the field of criminalistic, security, penal and legal theory and practice. Publication of this Collection contributes to improving of mutual cooperation betw