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Hadis Pakdel, Dev Raj Paudyal, Sreeni Chadalavada, Md Jahangir Alam and Majid Vazifedoust
The frequency and severity of extremes, including extreme precipitation events, extreme evapotranspiration and extreme water storage deficit events, are changing. Thus, the necessity for developing a framework that estimates non-stationary conditions is ...
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Raúl Llasag Rosero, Catarina Silva and Bernardete Ribeiro
Predictive Maintenance (PM) strategies have gained interest in the aviation industry to reduce maintenance costs and Aircraft On Ground (AOG) time. Taking advantage of condition monitoring data from aircraft systems, Prognostics and Health Maintenance (P...
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Bilal Asad, Toomas Vaimann, Anouar Belahcen, Ants Kallaste, Anton Rassõlkin, Payam Shams Ghafarokhi and Karolina Kudelina
This paper presents the modeling and the broken rotor bar fault diagnostics by time?frequency analysis of the motor current under an extended startup transient time. The transient current-based nonstationary signal is retrieved and investigated for its t...
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Ashraf AlShalalfeh and Laith Shalalfeh
In rotary machinery, bearings are susceptible to different types of mechanical faults, including ball, inner race, and outer race faults. In condition-based monitoring (CBM), several techniques have been proposed in fault diagnostics based on the vibrati...
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Nanyang Zhao, Zhiwei Mao, Donghai Wei, Haipeng Zhao, Jinjie Zhang and Zhinong Jiang
Diesel engines, as power equipment, are widely used in the fields of the automobile industry, ship industry, and power equipment. Due to wear or faulty adjustment, the valve train clearance abnormal fault is a typical failure of diesel engines, which may...
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Alessandro Paolo Daga and Luigi Garibaldi
The estimation of the Instantaneous Angular Speed (IAS) has in recent years attracted a growing interest in the diagnostics of rotating machines. Measurement of the IAS can be used as a source of information of the machine condition per se, or for perfor...
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Boris Lanetskii,Vadim Lukyanchuk,Hennadii Khudov,Mikhail Fisun,Oleksii Zvieriev,Ivan Terebuha
Pág. 55 - 65
Solving the problems of setting requirements to the reliability of complex technical systems for various purposes presupposes their classification according to the features characterizing the purpose, modes of use, etc. According to the modes of use, sys...
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E. Chuke Nwude,Tarila Boloupremo
Pág. 71 - 76
The paper investigates the relationship between national income and government aggregate expenditure in Nigeria by testing the validity of Wagner?s law and Keynes?s hypothesis for the period between 1970 and 2014. More specifically, by applying time-seri...
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Shanshan Meng, Xianhong Xie, Xiao Yu
Pág. 1 - 16
Watershed characteristics such as patterns of land use and land cover (LULC), soil structure and river systems, have substantially changed due to natural and anthropogenic factors. To adapt hydrological models to the changing characteristics of watershe...
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Kyoung-Jin An, Sang-Woo Lee, Soon-Jin Hwang, Se-Rin Park, Sun-Ah Hwang
Pág. 1 - 21
This study examined the non-stationary relationship between the ecological condition of streams and the proportions of forest and developed land in watersheds using geographically-weighted regression (GWR). Most previous studies have adopted the ordinary...
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