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Shuhe Zheng, Yang Liu, Wuxiong Weng, Xuexin Jia, Shilong Yu and Zuoxun Wu
Recognition and localization of fruits are key components to achieve automated fruit picking. However, current neural-network-based fruit recognition algorithms have disadvantages such as high complexity. Traditional stereo matching algorithms also have ...
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Gregorio Landi and Giovanni E. Landi
The Cramer?Rao?Frechet inequality is reviewed and extended to track fitting. A diffused opinion attributes to this inequality the limitation of the resolution of the track fits with the number N of observations. It will be shown that this opinion is inco...
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Zhiyao Zhu, Huilong Ren, Xiuhuan Wang, Nan Zhao and Chenfeng Li
The limit state function is important for the assessment of the longitudinal strength of damaged ships under combined bending moments in severe waves. As the limit state function cannot be obtained directly, the common approach is to calculate the result...
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Ruyi Zhou, Dasheng Wu, Luming Fang, Aijun Xu and Xiongwei Lou
Traditional field surveys are expensive, time-consuming, laborious, and difficult to perform, especially in mountainous and dense forests, which imposes a burden on forest management personnel and researchers. This study focuses on predicting forest grow...
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Eduardo Salvador Bañuelos Cabral,José Alberto Gutiérrez Robles,José Luis Naredo Villagrán,Julián Sotelo Castañón,Verónica Adriana Galván Sánchez,Jorge Luis García Sánchez
Pág. 155 - 167
El artículo presenta una descripción detallada de las técnicas más utilizadas para hacer ajuste racional de funciones del dominio de la frecuencia. Las técnicas son: Aproximación Asintótica de Bode, Mínimos Cuadrados Ordinarios, Mínimos Cuadrados Iterati...
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Xiangcheng Ma, Mengfan Lv, Tie Cai and Zhikuan Jia
Studying carbon dioxide fluxes in wheat fields is becoming increasingly important. The dry semi-humid area in China is an important wheat production area, but the variations in carbon dioxide fluxes in wheat fields and the mechanisms associated with the ...
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Gabriele Dessena, Marco Civera, Dmitry I. Ignatyev, James F. Whidborne, Luca Zanotti Fragonara and Bernardino Chiaia
The Loewner framework has recently been proposed for the system identification of mechanical systems, mitigating the limitations of current frequency domain fitting processes for the extraction of modal parameters. In this work, the Loewner framework com...
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Lucio Di Cosmo,Diego Giuliani,Maria Michela Dickson,Patrizia Gasparini
Pág. e019
Aims of the study. Assessment of growth is essential to support sustainability of forest management and forest policies. The objective of the study was to develop a species-specific model to predict the annual increment of tree basal area through variabl...
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Mengtao Zhang, Mengli Wang, Hang Guo, Junjun Hu and Jian Xiong
The global tropospheric zenith delay grid products of VMF1 and VMF3 (Vienna mapping functions) with different resolutions are used to calculate the tropospheric zenith delay of eight IGS (International GNSS Service) stations in China, and the accuracy of...
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Ziwei Huang, Shaoying Li, Yihuan Peng and Feng Gao
The development of the county economy in China is a complicated process that is influenced by many factors in different ways. This study is based on multi-source big data, such as Tencent user density (TUD) data and point of interest (POI) data, to calcu...
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Feiya Li, Chunyun Fu, Dongye Sun, Hormoz Marzbani and Minghui Hu
Geometric map features, such as line segments and planes, are receiving increasing attention due to their advantages in simultaneous localization and mapping applications. However, large structures in different environments are very likely to appear repe...
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Jianfang Ma, Haihong Zhu, Peng Li, Chengcheng Liu, Feng Li, Zhenwei Luo, Meihui Zhang and Lin Li
Exploring the spatial patterns of COVID-19 transmission and its key determinants could provide a deeper understanding of the evolution of the COVID-19 pandemic. The goal of this study is to investigate the spatial patterns of COVID-19 transmission in dif...
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Dongzi Pan and Ying Li
Tidal bores are a natural phenomenon with high flow velocity and destructive potential. A spur dike is a widely used river regulation and embankment protection structure that minimizes erosion, promotes deposition, and protects riverbanks. However, the s...
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Weidong Wang, Xiangshui Li, Kai Zhang, Juan Shi, Wentao Shi and Wasiq Ali
To minimize the major decline in direction of arrival (DOA) estimation performance for an acoustic vector sensor array (AVSA) with the coexistence of axial deviation and non-uniform noise, a two-step iterative minimization (TSIM) method is proposed in th...
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Georgiana Magu, Radu Lucaciu and Alexandru Isar
A way to reduce the uncertainty at the output of a Kalman filter embedded into a tracker connected to an automotive RADAR sensor consists of the adaptive selection of parameters during the tracking process. Different informed strategies for automatically...
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Weihao Xuan, Feng Zhang, Hongye Zhou, Zhenhong Du and Renyi Liu
The increase in atmospheric pollution dominated by particles with an aerodynamic diameter smaller than 2.5 µm (PM2.5) has become one of the most serious environmental hazards worldwide. The geographically weighted regression (GWR) model is a vital method...
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Paolo S. Valvo
The paper presents a phenomenological epidemiological model for the description and prediction of the time trends of COVID-19 deaths worldwide. A bimodal distribution function?defined as the mixture of two lognormal distributions?is assumed to model the ...
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Zhen Cui, Zong-fu Fu, Wen-hong Dai and Zheng-qing Lai
The implementation of floating structures has increased with the construction of new sluices for flood control. The overturning moment of floating structure and its influencing factors are the important parameters that determine the structural safety. It...
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Zong-Fu Fu, Zhen Cui, Wen-Hong Dai and Yue-Jun Chen
Combined orifice-weir flow is a complex phenomenon in hydropower and the discharge capacity of a structure affects the safety of the structure. It is essential to propose an equation for computing the discharge coefficient of combined orifice-weir flow. ...
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Zhen Cui, Zong-fu Fu, Wen-hong Dai and Zheng-qing Lai
The implementation of floating structures has increased with the construction of new sluices for flood control. The overturning moment of floating structure and its influencing factors are the important parameters that determine the structural safety. It...
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