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Ching-Shoei Chiang
Pág. 08 - 12
The design of curves, surfaces, and solids are important in computer aided geometric design (CAGD). Images, surround by boundary curves, are also investigated by many researchers. One way to describe an image is using the medial axis transform. Under thi...
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Mengying Wang, Mingzhi Zhang, Yingtao Qi, Dingqing Zhang, Chenguang Wang, Wenying Yao and Dian Zhou
Insufficient public service facilities in rural areas, which leads to failures in meeting the needs of villagers, has become a significant barrier to the high-quality development of rural regions. This issue is particularly acute in the Loess Plateau are...
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Changwei Xiao, Chunxia Liu and Yuechen Li
The study of the two-way information flow between cities is of great significance to promote regional coordinated development, but the current mainstream non-directional network analysis method cannot analyze it effectively. In this paper, the quantities...
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Caterina Feletti, Carlo Mereghetti and Beatrice Palano
In the field of robotics, a lot of theoretical models have been settled to formalize multi-agent systems and design distributed algorithms for autonomous robots. Among the most investigated problems for such systems, the study of the Uniform Circle Forma...
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Yandi Song, Shaoyao Zhang and Wei Deng
Determining the optimal planning scale for urban life circles and analyzing the associated built environment factors are crucial for comprehending and regulating residential differentiation. This study aims to bridge the current research void concerning ...
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Jia Ou, Tingfa Xu, Xiaochuan Gan, Xuejun He, Yan Li, Jiansu Qu and Wei Zhang
Photogrammetry as an engineering measurement technology for the rapid and non-contact acquisition of geometric parameters, such as the attitude, position, and shape of a measured object, is widely used in the development and production processes of the a...
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Tianming Feng, Jin Lei, Yujie Zeng, Xinyan Qin, Yanqi Wang, Dexin Wang and Wenxing Jia
The Flying?Walking Power Line Inspection Robot (FPLIR) faces challenges in maintaining stability and reliability when operating in harsh transmission line environments with complex conditions. The robot often switches modes frequently to land accurately ...
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Carlo Santini, Fabio Mangini and Fabrizio Frezza
The purpose of a circle packing procedure is to fill up a predefined, geometrical, closed contour with a maximum finite number of circles. The subject has received considerable attention in pure and applied sciences and has proved to be highly effective ...
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Long Jiang, Jianxi Yao and Zuyuan Liu
Manoeuvrability is one of the important ship hydrodynamic performances. That is closely related to the safety and economy of navigation. The development of a high-accuracy and high-efficiency numerical method to compute the forces and moments on manoeuvr...
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King-Cheng Tsai, Wei-Kuo Tseng, Chun-Lung Chen and Yi-Jia Sun
Traditional celestial navigation adopts the intercept method or Sumner line method in order to solve the fix problems of celestial sight reduction. While an estimated position is often needed in order to complete celestial positioning, these methods are ...
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Dongpil Cho, Seongkil Nam, Chulho Cho, Dajung Lee, Eunyoung Jeong, Youngcheon Jeong, Jaeyik Lee, Marcus Cridland, Bongjin Kim, Kwangsoo Kim, Jihoon Kim and Myunghyun Kim
Tandem SAW (Submerged Arc Welding) is one welding process that has been applied to maximize the welding productivity at the panel stage in ship building field. The weld bead profiles produced by Tandem SA welding exceed the acceptance criteria specified ...
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Timothy J. Hunter, Jermiah J. Joseph, Udunna Anazodo, Sanjay R. Kharche, Christopher W. McIntyre and Daniel Goldman
Background: Atrial fibrillation is a prevalent cardiac arrhythmia and may reduce cerebral blood perfusion augmenting the risk of dementia. We hypothesize that geometric variations in the cerebral arterial structure called the Circle of Willis (CoW) play ...
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Guoqing Jin, Zhe Sun, Zhi Zong, Li Zou and Yingjie Hu
A novel technique based on conformal mapping and the circle theorem has been developed to tackle the boundary penetration issue, in which vortex blobs leak into structures in two-dimensional discrete vortex simulations, as an alternative to the tradition...
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Landon Kamps, Shota Hirai and Harunori Nagata
Hybrid rockets are attractive as post-boost stages and kick motors due to their inherent safety and low cost, but it is not clear from previous research which oxidizer is most suitable for maximizing ?V within a fixed envelope size, or what impact O/F sh...
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Mate Baric, David Brcic, Mate Kosor and Roko Jelic
Based on traditional expressions and spherical trigonometry, at present, great circle navigation is undertaken using various navigational software packages. Recent research has mainly focused on vector algebra. These problems are calculated numerically a...
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Subhash Bhagat, Bibhuti Das, Abhinav Chakraborty and Krishnendu Mukhopadhyaya
For a given positive integer k, the k-circle formation problem asks a set of autonomous, asynchronous robots to form disjoint circles having k robots each at distinct locations, centered at a set of fixed points in the Euclidean plane. The robots are ide...
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Zihao Liu, Zhaolin Wu and Zhongyi Zheng
In order to avoid collision, ships usually take collision avoidance manoeuvres, such as course alteration. However, the effect of such a manoeuvre is influenced by ship manoeuvrability. This paper proposed an improved danger sector model to identify the ...
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Milan Koren, Milan Huncaga, Juliana Chudá, Martin Mokro? and Peter Surový
Circle-fitting methods are commonly used to estimate diameter at breast height (DBH) of trees from horizontal cross-section of point clouds. In this paper, we addressed the problem of cross-section thickness optimization regarding DBH estimation bias and...
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Fan Xu, Xuke Hu, Shuaiwei Luo and Jianga Shang
Wi-Fi fingerprinting has been widely used for indoor localization because of its good cost-effectiveness. However, it suffers from relatively low localization accuracy and robustness owing to the signal fluctuations. Virtual Access Points (VAP) can effec...
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Mona Forsman, Johan Holmgren and Kenneth Olofsson
Diameter at breast height has been estimated from mobile laser scanning using a new set of methods. A 2D laser scanner was mounted facing forward, tilted nine degrees downwards, on a car. The trajectory was recorded using inertial navigation and visual S...
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