Article
Mechanics
Mian Jiang, Daoyong Wang, Yingwei Kuang, Xianxian Mo
Summary: A new method for identifying the location of breathing cracks in blades is proposed in this paper, which evaluates the nonlinearity in the responses of blades and avoids using the non-destructive status of structures.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2021)
Article
Automation & Control Systems
Xingjian Liu, Wenyuan Chen, Harikrishnan Madhusudanan, Linghao Du, Yu Sun
Summary: Stereo vision is widely used for industrial measurement, and the optimal camera orientation angle is typically between 60 to 80 degrees, as supported by a new model that considers the correlation between camera orientation and measurement accuracy. Different from previous theories, practical systems often operate outside the theoretical optimal range.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2021)
Article
Physics, Multidisciplinary
Long-Yu Cheng, Fei Ming, Fa Zhao, Liu Ye, Dong Wang
Summary: This study investigates the dynamics of entropic uncertainty and quantum discord in two double quantum dot systems coupled via a transmission line resonator, revealing subtle effects of different parameters on the dynamics of entropic uncertainty and the correlation between quantum discord and the lower bound of entropic uncertainty depending on the initial state of the system.
FRONTIERS OF PHYSICS
(2022)
Article
Medicine, Legal
J. Shanmugam Subramaniam, M. Hubig, H. Muggenthaler, S. Schenkl, J. Ullrich, G. Pourtier, M. Weiser, G. Mall
Summary: A study was conducted using finite element simulations to analyze the sensitivity of body cooling. It was found that variations in the rectal temperature measurement location may lead to deviations in time of death estimation of up to 2-3 hours.
INTERNATIONAL JOURNAL OF LEGAL MEDICINE
(2023)
Article
Automation & Control Systems
Jianfeng Fu, Guobing Song, Bart De Schutter
Summary: This article focuses on the impact of measurement uncertainties on transmission line parameter estimation, and proposes the use of MLE method to reduce the influence of uncertainties in measurements on parameter estimation and fault location algorithms. The results show that the proposed method is highly effective in reducing the impact of measurement uncertainties on fault location algorithms.
IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING
(2021)
Article
Thermodynamics
Shaobo Sun, Shengwei Wang, Kui Shan
Summary: This study quantifies the measurement uncertainties of water flow meters in multiple water-cooled chiller systems using a Bayesian approach, proposing a quantification strategy that performs well in quantifying both systematic and random uncertainties with acceptable accuracy. The strategy can be used to optimize the control of chiller systems and improve their reliability.
APPLIED THERMAL ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Seok Hwan Lee, Juergen Rauch, Hyun-Seung Nam, Byung-Ro Yoon, Woong Kang, Suyong Kwon
Summary: The viscosity measurement standard systems developed by KRISS and PTB were compared, and the international equivalence of KRISS's standard system was confirmed. The measurement range of KRISS's system was 0.3-100000 mm2/s with 0.17-0.5% uncertainty. The viscosity standard systems of KRISS and PTB were bilaterally compared using three different viscosity standard liquids, and the calculated En was <1 for all experimental cases.
Article
Construction & Building Technology
Shaobo Sun, Kui Shan, Shengwei Wang
Summary: Economizer control is an important measure for energy savings in air-conditioning systems during moderate seasons. Humidity measurement uncertainties have a significant impact on enthalpy-based economizer control, and an uncertainty-tolerant control strategy is proposed to mitigate these effects.
SUSTAINABLE CITIES AND SOCIETY
(2024)
Article
Automation & Control Systems
Fulin Liu, Zhenzhong Wei, Guangjun Zhang
Summary: This article presents a monocular off-board vision system for relative attitude measurement of fixed-wing aircraft. The system utilizes a model-based attitude tracking algorithm and has been validated in a real-flight experiment, demonstrating its real-time capabilities and accuracy.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Physics, Multidisciplinary
V. S. Indrajith, R. Muthuganesan, R. Sankaranarayanan
Summary: In this article, the quantum coherence of bipartite state is studied from the perspective of weak measurement. The concept of coherence relative to measurement is generalized, and the coherence for the Bell diagonal and Werner states is calculated. The notion of coherence is expanded to include correlations and its connections with other quantifications of nonlocality are explored. The coherence measure proposed in this article can be seen as a generalized version of the Wigner-Yanese skew information measure and other nonlocal measures. Uncertainty relations are introduced within the context of weak measurements, and a novel form of variance considering the weak value of an observable is proposed.
Article
Computer Science, Information Systems
Wahyu Rahmaniar, Wen-June Wang, Wahyu Caesarendra, Adam Glowacz, Krzysztof Oprzedkiewicz, Maciej Sulowicz, Muhammad Irfan
Summary: This paper proposes a novel framework for indoor positioning of unmanned aerial vehicles (UAV) using a camera, achieving an accuracy of 91.7% and a computation time of 8 frames per second (fps).
Article
Management
Leonardo Augusto de Vasconcelos Gomes, Flavio Hourneaux Junior, Ana Lucia Figueiredo Facin, Lorenna Fernandes Leal
Summary: This study presents a new framework for performance measurement and management systems (PMMS) in uncertain ecosystems. The framework consists of four main dimensions and helps managers effectively measure and manage performance in uncertain ecosystem environments.
INTERNATIONAL JOURNAL OF OPERATIONS & PRODUCTION MANAGEMENT
(2023)
Article
Chemistry, Analytical
Giovanni Gibertoni, Guido Borghi, Luigi Rovati
Summary: In this paper, we investigate and compare the adoption of several vision-based classification algorithms, including Machine Learning, Deep Learning, and Expert Systems, in order to improve the performance of an ophthalmic instrument designed for Pupillary Light Reflex measurement. We collected and publicly released a dataset called PopEYE, consisting of 15k eye images belonging to 22 different subjects acquired through the specialized ophthalmic device. Experimental results regarding classification accuracy of the eye status and computational load analysis are discussed.
Article
Automation & Control Systems
F. Zhou, Y. Shen, L. Lin
Summary: In this paper, an adaptive output feedback control law is proposed for stabilizing MIMO nonlinear systems with distinct unknown measurement errors. By introducing an observer and special adaptive high-gains, a controller is developed to tolerate uncertain measurement errors, and simulations are provided to validate the theoretical analysis.
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
(2023)
Article
Engineering, Industrial
Gianfranco Genta, Giacomo Maculotti
Summary: This paper explores the importance of wear assessment in the Industry 4.0 framework and evaluates the uncertainty of existing methods. A framework is developed and applied for wear measurement by utilizing the metrological characteristics of instruments and statistical modeling.
CIRP ANNALS-MANUFACTURING TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Ahmed Y. Mohammed, Anna Golijanek-Jedrzejczyk
FLOW MEASUREMENT AND INSTRUMENTATION
(2020)
Article
Engineering, Multidisciplinary
Anna Golijanek-Jedrzejczyk, Andrzej Mrowiec, Robert Hanus, Marcin Zych, Marcin Heronimczak, Dariusz Swisulski
Summary: The study utilized segmental orifices for flow measurement in a stainless-steel pipe, comparing experimental and simulation results which showed relative differences within acceptable ranges. Uncertainty analysis for mass flow measurement using analytical and Monte Carlo methods were also discussed, showing that the relative expanded uncertainty did not exceed 1.8% for the tested orifice.
Article
Engineering, Multidisciplinary
Andrzej Wilk, Wladyslaw Koc, Cezary Specht, Jacek Skibicki, Slawomir Judek, Krzysztof Karwowski, Piotr Chrostowski, Jacek Szmaglinski, Pawel Dabrowski, Krzysztof Czaplewski, Mariusz Specht, Roksana Licow, Slawomir Grulkowski
Summary: The shape and position of the railway track axis are crucial in defining design parameters, with global and local measurements playing important roles. An innovative method using Global Navigation Satellite Systems receivers to determine the railway track axis position is proposed in this article, with theoretical analyses verified experimentally.
Article
Engineering, Electrical & Electronic
Robert Otta, Dariusz Swisulski, Anna Golijanek-Jedrzejczyk
Summary: The article introduces the basic types of air flow meters used in internal combustion engines of cars, presents the results of testing these flow meters on a specially prepared measuring stand, and analyzes the possibility of replacing them, which has been verified in practice.
PRZEGLAD ELEKTROTECHNICZNY
(2021)
Article
Energy & Fuels
Aleksander Jakubowski, Leszek Jarzebowicz, Mikolaj Bartlomiejczyk, Jacek Skibicki, Slawomir Judek, Andrzej Wilk, Mateusz Plonka
Summary: The paper presents a novel approach to modeling electrified transportation systems, incorporating mechanical dynamics, electric supply distribution, and energy conversion losses. The modeling methodology utilizes a flexible twin data-bus structure, making it suitable for various systems and enabling verification through simulation and measurement data.
Article
Environmental Sciences
Jacek Szmaglinski, Andrzej Wilk, Wladyslaw Koc, Krzysztof Karwowski, Piotr Chrostowski, Jacek Skibicki, Slawomir Grulkowski, Slawomir Judek, Roksana Licow, Karolina Makowska-Jarosik, Michal Michna, Tadeusz Widerski
Summary: The article presents the results of satellite railway track position measurements conducted by a multidisciplinary research team from Gdansk University of Technology and Gdynia Maritime University. The team described the measuring methods used for reconstructing the railway track axis position and diagnosing geometry deformations. They also developed a novel method for mobile GNSS measurements. The research showed that the accuracy of railway track axis reconstruction using mobile GNSS measurements is sufficient for railway business.
Article
Energy & Fuels
Robert Hanus, Marcin Zych, Anna Golijanek-Jedrzejczyk
Summary: This article presents the application of the radioisotope absorption method in the study of two-phase water-air flow in a horizontal pipe. The measurement principle and test stand are briefly described, and the signal analysis methods applied to data obtained from scintillation detectors are presented. Examples of gas phase velocity measurement results for four types of flow are presented, and it is found that the CCF/ASDF and CCF/AMDF methods provide more accurate measurements of the dispersed phase than the CCF method.
Article
Environmental Sciences
Slawomir Judek, Andrzej Wilk, Wladyslaw Koc, Leszek Lewinski, Artur Szumisz, Piotr Chrostowski, Slawomir Grulkowski, Jacek Szmaglinski, Michal Michna, Krzysztof Karwowski, Jacek Skibicki, Roksana Licow
Summary: This article discusses the importance of verifying geometric parameters in railway line construction and maintenance. Mobile measurements using GNSS receivers and IMU have been performed to determine the base vector of the measuring platform. The article analyzes the impact of measuring conditions on the accuracy of GNSS results and suggests the use of digital filtering to eliminate disturbances. It also explores the possibility of using GNSS and IMU for determining various angles of the railway track.
Article
Energy & Fuels
Robert Hanus, Marcin Zych, Anna Golijanek-Jedrzejczyk
Summary: This paper discusses the application of the gamma radiation absorption method in measuring the velocity of dispersed phases in two-phase flows, specifically the flow of liquid-gas in a horizontal pipeline and liquid-solid particles in a vertical pipe. The research utilized radiometric sets with Am-241 gamma radiation sources and NaI(Tl) scintillation detectors. Statistical methods were employed to analyze the stochastic signals obtained from the scintillation probes. The phase method was found to be more accurate than the commonly used classical cross-correlation method in the presented cases.
Article
Chemistry, Analytical
Andrzej Wilk, Len Gelman, Jacek Skibicki, Slawomir Judek, Krzysztof Karwowski, Aleksander Jakubowski, Pawel Kaczmarek
Summary: The article presents an innovative method for monitoring the displacement of overhead contact lines (OCL) using LED light points and cameras. The method can be scaled up to monitor the motion of other large objects and has yielded novel results.
Article
Chemistry, Analytical
Jacek Skibicki, Andrzej Wilk, Wladyslaw Koc, Roksana Licow, Jacek Szmaglinski, Piotr Chrostowski, Slawomir Judek, Krzysztof Karwowski, Slawomir Grulkowski
Summary: The article proposes a solution to improve the accuracy of dynamic measurements with GNSS receivers, especially in motion. The new method utilizes multiple GNSS receivers arranged in a symmetric configuration and geometric constraints to determine the object's location. The proposed method has been successfully verified through comparing signals recorded by up to five GNSS receivers in stationary and dynamic measurements. It shows remarkable reduction in measurement uncertainty and can be applied in various scenarios requiring high accuracy positioning.
Article
Multidisciplinary Sciences
Anna Golijanek-Jedrzejczyk, Andrzej Mrowiec
Summary: The paper presents the results of an experimental study on the flow characteristics of a cylindrical orifice under laminar flow conditions. Standard flow characteristics were obtained for different kinematic viscosities.
SCIENTIFIC REPORTS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Robert Hanus, Marcin Zych, Anna Golijanek-Jedrzejczyk
Summary: This paper presents the application of radiotracers and gamma absorption method in two-phase flow measurements in pipelines, with two different methods for analyzing acquired signals based on cross-correlation function and phase of cross-spectral density distribution.
2022 IEEE 21ST MEDITERRANEAN ELECTROTECHNICAL CONFERENCE (IEEE MELECON 2022)
(2022)
Article
Instruments & Instrumentation
Robert Hanus, Marcin Zych, Volodymyr Mosorov, Anna Golijanek-Jedrzejczyk, Marek Jaszczur, Artur Andruszkiewicz
Summary: This paper presents the application of gamma-absorption technique in studying water-air flow parameters in a horizontal pipeline. The experimental setup involved radiometric instruments for signal analysis, and the results showed accurate identification of flow types and effective measurement of gas velocity and void fraction.
METROLOGY AND MEASUREMENT SYSTEMS
(2021)
