2022年3月1日 · In this study, the pressure-sensitive Hoffman yield criterion and the Xia model are implemented for the plane stress case to simulate the mechanical response under a bi-axial loading state.

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The original Xia path loss model and the Walfisch-Ikegami model were applied for predicting in low rise building area. In case of the Xia model for non line of sight (NLOS), it requires a set of model parameters such as distance from the last roof top to receiver, average building height, and antenna heights.

重构项目结构为xia_cog_model_2; 增加数据验证和错误处理; 添加Stan模型实现; 改进数值稳定性; 完善代码文档

In this study, the pressure-sensitive Hoffman yield criterion and the Xia model are implemented for the plane stress case to simulate the mechanical response under a bi-axial loading state.

2011年12月14日 · A simplified version of the constitutive model proposed by Xia et al. (Int J Solids Struct 39:4053–4071, 2002) is adopted. The inverse analysis is comparatively performed by the following alternative computational methodologies: (a) mathematical programming by a trust-region algorithm; (b) proper orthogonal decomposition and artificial neural ...

This paper presents a semi deterministic path loss model at frequency of 28 GHz for fifth generation (5G). We modified Xia model which was used for frequency of 0.9 GHz to 2.0 GHz with a correction factor in order to use for higher frequency.

In this study, the pressure-sensitive Hoffman yield criterion and the Xia model are implemented for the plane stress case to simulate the mechanical response under a bi-axial loading state. The performance of both models is experimentally assessed by comparison to bi-axial tests on cruciform-shaped specimens loaded in different directions with ...

My research works focus on large language models and foundation models, graph learning, self-supervised learning, and their applications in recommendation systems and smart cities. I received my Ph.D. and Bachelor degrees in computer science at South China University of Technology (SCUT) adviced by Professor Yong Xu.

Xia, Y., Bjornstad, O. N. and Grenfell, B. T. (2004) Measles metapopulation dynamics: a gravity model for epidemiological coupling and dynamics. The American Naturalist 164, 267-281 (featured by Nature News and Medical News Today )