Results 11 to 20 of about 127,288 (293)

From industry-wide parameters to aircraft-centric on-flight inference: Improving aeronautics performance prediction with machine learning

Data-Centric Engineering, 2020
Aircraft performance models play a key role in airline operations, especially in planning a fuel-efficient flight. In practice, manufacturers provide guidelines which are slightly modified throughout the aircraft life cycle via the tuning of a single ...
Florent Dewez, Benjamin Guedj, Vincent Vandewalle   +2 more
doaj   +1 more source

Structural Design Modification of a CubeSat Regarding Modal Compatibility for Launching by Vega C Launcher [PDF]

فصلنامه علوم و فناوری فضایی, 2023
In this research, the dynamic response of a U-12 CubeSat (20x20x30 cm) is investigated for three configurations during the launch conditions. Despite the existence of a successful design for this satellite, adding a mount to install on a standard adapter,
Mohammad Haji Jafari, Afshin ValiMohammad, Mahsa Mahdavi   +2 more
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High-speed modal analysis of dynamic modal coupling in fiber laser oscillator

Frontiers in Physics, 2023
Up till now, the spatial and temporal dynamics of transverse mode instability (TMI) in fiber laser oscillator have increasingly attracted a worldwide attention.
Junyu Chai, Junyu Chai, Junyu Chai, Wenguang Liu, Wenguang Liu, Wenguang Liu, Xiaolin Wang, Xiaolin Wang, Xiaolin Wang, Qiong Zhou, Qiong Zhou, Qiong Zhou, Kun Xie, Yujun Wen, Yujun Wen, Yujun Wen, Jiangbin Zhang, Jiangbin Zhang, Jiangbin Zhang, Pengfei Liu, Pengfei Liu, Pengfei Liu, Hanwei Zhang, Hanwei Zhang, Hanwei Zhang, Dan Zhang, Dan Zhang, Dan Zhang, Zongfu Jiang, Zongfu Jiang, Zongfu Jiang, Guomin Zhao, Guomin Zhao, Guomin Zhao   +33 more
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Capillary-Inserted Rotor Design for HRµMAS NMR-Based Metabolomics on Mass-Limited Neurospheres

Molecules, 2017
Nuclear magnetic resonance (NMR) spectroscopy is a powerful analytical technique and has been widely used in metabolomics. However, the intrinsic low sensitivity of NMR prevents its applications to systems with limited sample availabilities.
Nghia Tuan Duong, Masanori Yamato, Masayuki Nakano, Satoshi Kume, Yasuhisa Tamura, Yosky Kataoka, Alan Wong, Yusuke Nishiyama   +7 more
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Numerical Assessment of Building Vibration Techniques Using Laboratory Models [PDF]

Port Said Engineering Research Journal, 2022
Experimental Modal Analysis (EMA) is one of the most attractive engineering fields nowadays, which specifies in the studies of modal parameters of existing small buildings under forced vibrations.
moataz Elrayes, Ezzat Sallam, Emad Abdel-Galil   +2 more
doaj   +1 more source

Modal identification of cylindrical shell using circumference reduction method

Nihon Kikai Gakkai ronbunshu, 2015
For precision improvement of the noise prediction, the dynamic characteristics of structures need to be verified. This paper focuses on modal identification of the cylindrical shell structures.
Atsushi KITAHARA, Takuya YOSHIMURA
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Modal P-delta – simplified geometric nonlinear method by using modal and buckling analysis

Revista IBRACON de Estruturas e Materiais, 2022
Recent works show that in structures, there is a relationship between the natural period of vibration and global second-order effects. This relationship occurs because both depend on the stiffness matrix and the mass matrix of the structure. In this work,
Wagner Almeida Ferreira, Jeffer Roussell Cordova De La Cruz, Iván Darío Gómez Araujo, Jesús Antonio Garcia Sánchez   +3 more
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Modal Appropriation for Use with In-Operation Modal Analysis

Shock and Vibration, 2015
We propose in this paper a numerical modal appropriation method for use with in-operation modal analysis (INOPMA). The key idea is to realize that the correlation sequence of the system output is the sum of decaying sinusoids with a certain phase shift ...
M. Abdelghani, D. J. Inman
doaj   +1 more source

The Influence of Dome Geometry on the Results of Modal and Buckling Analysis

Applied Sciences, 2023
The main purpose of this paper is to compare the results of modal analysis for two types of domes. The first one is a low-rise Schwedler dome. The second one is a high-rise geodesic dome.
Urszula Radoń, Paweł Zabojszcza, Milan Sokol   +2 more
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Review on Key Techniques of Video Multimodal Sentiment Analysis [PDF]

Jisuanji kexue yu tansuo
Sentiment analysis is the process of automatically determining an opinion holder􀆳s attitude or emotional tendency. It is widely used in business, social media analysis, and public opinion monitoring.
DUAN Zongtao, HUANG Junchen, ZHU Xiaole
doaj   +1 more source