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532 results on '"Ma, Guoliang"'

3. Impact Effect Analysis of a Special Blade Missile Hitting a Car Target

Author

Zhang, Meng, Huang, Shuping, Yang, Weiqi, Ma, Guoliang, Jia, Jianjun, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Rui, Xiaoting, editor, and Liu, Caishan, editor

Published
2024
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10. Region optimization and sensitivity analysis of THT assembly process parameters based on flexible soldering robot platform

Author

YU Tao, ZHAO Pan, WANG Jikong, WANG Feiru, WANG Lei, MA Guoliang, and HOU Jing

Subjects
soldering robot, process parameter, sensitivity analysis, stability region, region optimization, Motor vehicles. Aeronautics. Astronautics, TL1-4050
Abstract

In order to solve the problem that the selection of key process parameters of a flexible soldering robot depends on manual experience, the empirical model of its THT assembly process parameters is established with the response surface method and the reliability of the model is verified. On this basis, the multi-parameter relative sensitivity of the key process parameters is analyzed through the Monte-Carlo simulation, and their single-parameter sensitivity curve is drawn. Then, based on the sensitivity analysis, the stability region division method is designed, and the stability region of process parameters for soldering quality comprehensive score is obtained. The optimal region of process parameters of the soldering robot are acquired by compressing the stability region: soldering temperature from 350-368 ℃, soldering time from 1.31-1.48 s and solder feeding volume from 1.5-2.0 mm3. The average value of the soldering quality comprehensive score within the optimal region of process parameters is 90.2 points.

Published
2024
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17. Two-Phased Federated Learning with Clustering and Personalization for Natural Gas Load Forecasting

Author

Zhao, Shubao, Liu, Jia, Ma, Guoliang, Yang, Jie, Liu, Di, Li, Zengxiang, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Goebel, Randy, editor, Yu, Han, editor, Faltings, Boi, editor, Fan, Lixin, editor, and Xiong, Zehui, editor

Published
2023
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24. Charge asymmetry dependence of flow and a novel correlator to detect the chiral magnetic wave in a multiphase transport model

Author

Shen, Diyu, Chen, Jinhui, Ma, Guoliang, Ma, Yu-Gang, Shou, Qiye, Zhang, Song, and Zhong, Chen

Subjects
High Energy Physics - Phenomenology, Nuclear Experiment
Abstract

In a multiphase transport model with the initial electric quadrupole moment, we studied and discussed the charge asymmetry ($A_{\rm ch}$) dependence of flow at varied kinematic windows in semi-central Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV. We then proposed a novel correlator $W$ which specially focuses on the difference of elliptic flow between positively and negatively charged hadrons induced by the chiral magnetic wave and, more importantly, is irrelevant to the ambiguous $A_{\rm ch}$. We found that the distribution of the second order correlator $W_2$ displays a convex structure in the absence of the quadrupole and a concave shape in the presence of the quadrupole. We also studied the response of $W_n$ for both signal and resonance background in a toy model and in analytical calculation. Such a method provides a new way to detect the chiral magnetic wave., Comment: We correct the constant factor 2 in the sub-distribution function f1, f2 on the numerator of Eqa. (16) in previous version. Published version to be appeared in physical review c

Published
2019
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28. Influence of bacterial suspension type on the strength of biocemented sand

Author

Ma, Guoliang, He, Xiang, Xiao, Yang, Chu, Jian, Cheng, Liang, and Liu, Hanlong

Subjects
Sand -- Mechanical properties -- Testing, Microorganisms -- Environmental aspects, Carbonates -- Environmental aspects, Strength of materials -- Analysis, Earth sciences
Abstract

Soil properties, the chemical composition of cementation solution, injection technique, and environmental conditions have all been extensively studied as variables influencing microbially induced carbonate precipitation performance. However, despite the fact that different researchers have used different bacterial suspensions, the influence of bacterial suspension type, more specifically some organic matters in bacterial suspensions, which can play a key role in the morphology and mechanical properties of CaC[O.sub.3], has often been overlooked. In this study, the harvested bacterial solutions were centrifuged to separate bacterial cells and supernatant. The precipitated cells were then diluted with three distinct solutions: supernatant (RB), fresh culture medium (FB), and 0.9% NaCl solution (NB), which were subsequently utilized to stabilize the sand. The results indicated that the bacterial suspension type could greatly impact the strength of biocemented sand, particularly coarse and medium sand. Differences in unconfined compressive strength can be related to differences in precipitated CaC[O.sub.3] microstructures, morphologies, and compositions, which were examined using scanning electron microscopy, X-ray diffraction analysis, and Fourier transform infrared spectroscopy. Key words: microbially induced calcite precipitation (MICP), unconfined compressive strength (UCS), bacterial suspension type, microstructure Les proprietes du sol, la composition chimique de la solution de cimentation, la technique d'injection et les conditions environnementales ont toutes ete largement etudiees comme variables influencant les performances du MICP. Cependant, malgre le fait que differents chercheurs aient utilise differentes suspensions bacteriennes, l'influence du type de suspension bacterienne, plus precisement de certaines matieres organiques dans les suspensions bacteriennes, qui peuvent jouer un role cle dans la morphologie et les proprietes mecaniques du CaC[O.sub.3], a souvent ete negligee. Dans cette etude, les solutions bacteriennes recoltees ont ete centrifugees pour separer les cellules bacteriennes et le surnageant. Les cellules precipitees ont ensuite ete diluees dans trois solutions distinctes : surnageant (RB), milieu de culture frais (FB) et solution de NaCl a 0,9% (NB), qui ont ensuite ete utilises pour stabiliser le sable. Les resultats ont indique que le type de suspension bacterienne pouvait avoir un impact important sur la resistance du sable biocimente, en particulier le sable grossier et moyen. Les differences de NGC peuvent etre liees aux differences de microstructures, de morphologies et de compositions du CaC[O.sub.3] precipite, qui ont ete examinees a l'aide de la microscopie electronique a balayage (MEB), de l'analyse par diffraction des rayons X (DRX) et de la spectroscopie infrarouge transformee de Fourier (IRTF). [Traduit par la Redaction] Mots-cles : precipitation de calcite induite par les microbes (MICP), resistance a la compression non confinee (UCS), type de suspension bacterienne, microstructure, Introduction The microbially induced carbonate precipitation (MICP)-based soil improvement approach has been introduced to geotechnical engineering for decades. Several studies have been conducted to investigate the performance of MICP in [...]

Published
2022
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34. Influence of initial-state momentum anisotropy on the final-state collectivity in small collision systems

Author

Nie, Maowu, Yi, Li, Jia, Jiangyong, and Ma, Guoliang

Subjects
Nuclear Theory, High Energy Physics - Phenomenology, Nuclear Experiment
Abstract

A multi-phase transport model is used to understand the origin of long-range collective azimuthal correlations in small-system collisions. To disentangle between collectivity associated with initial-state intrinsic momentum anisotropy and the collectivity arising as a final-state response to the collision geometry, we studied the development of collectivity in 5.02 TeV $p$+Pb collisions with both initial-state and final-state effects included. We find that the initial momentum anisotropy may not be fully isotropized through parton interactions, and the final-state partonic collectivity in general are correlated with both the initial momentum anisotropy and the shape of the collision geometry. The initial momentum anisotropy also influences the event by event fluctuation of collective flow. Therefore the mere evidence of geometry response of the collective flow can not rule out the presence of large contributions from the initial state., Comment: 5 pages, 3 figures

Published
2019
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37. Suspension Dynamics Analysis and LMS Adaptive Control of a Hoop Flexible Structure

Author

Ma, Guoliang, Xu, Minglong, Li, Hongguang, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Jing, Xingjian, editor, Ding, Hu, editor, and Wang, Jiqiang, editor

Published
2022
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