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1,137 results on '"He, Hongyan"'

6. An Improved Fast All-Sky Star Identification Based on the Polygon Algorithm

Author

Zhang, Chunxiao, Gao, Lingyan, Jiang, Cheng, Tong, Chiming, He, Hongyan, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, 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, 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, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, 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, Tan, Kay Chen, Series Editor, Wang, Yue, editor, Zou, Jiaqi, editor, Xu, Lexi, editor, Ling, Zhilei, editor, and Cheng, Xinzhou, editor

Published
2024
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25. Application of Frequency Domain Filtering in Edge Detection

Author

Li, Bo, He, Hongyan, 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, Oneto, Luca, 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, Wang, Yue, editor, Liu, Yuyang, editor, Zou, Jiaqi, editor, and Huo, Mengyao, editor

Published
2023
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33. Unveiling the secrets of the mid-infrared Moon

Author

Wu, Yunzhao, Jin, Qi, Li, Cui, Xu, Tianyi, Qi, Wenwen, Tan, Wei, Li, Xiaoman, Shi, Zhicheng, He, Hongyan, Dai, Shuwu, Li, Guo, Liu, Fengjing, Wang, Jingqiao, Wang, Xiaoyan, Lu, Yu, Cai, Wei, Wang, Qi, and Meng, Lingjie

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

The Moon's optical characteristics in visible and long-wavelength infrared (LWIR) have long been observed with our eyes or with instruments. What the mid-infrared (MIR) Moon looks like is still a mystery. For the first time we present detailed appearance of the MIR Moon observed by a high-resolution geostationary satellite and reveal the essence behind its appearance. The appearance of the MIR Moon is opposite to its normal visible appearance. In addition the MIR Moon shows limb darkening. Both the absolute and the relative brightness distribution of the MIR lunar disk changes with the solar incidence angle. The signatures of the MIR Moon are controlled by both the reflection and emission of the lunar surface. We also show first-ever brightness temperature maps of the lunar disk without needing a mosaic, which better show the temperature variation across the lunar disk. They reveal that the relationship between brightness temperature and solar incidence angle i is cos1/bi, and the power parameter is smaller than the Lambertian temperature model of cos1/4i observed for lunar orbit-based measurements. The slower decrease of the brightness temperature when moving away from the sub-solar point than the Lambertian model is due to topographic effects. The brightness temperature is dominated by albedo and the solar incidence angle and influenced by the topography. Our results indicate that the Moon in the MIR exhibits many interesting phenomena which were previously unknown, and contains abundant information about lunar reflection and thermal emission for future study.

Published
2020
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35. 3D Printing of Micro- and Nanoscale Bone Substitutes: A Review on Technical and Translational Perspectives

Author

Cheng, Lijia, K, Shoma Suresh, He, Hongyan, Rajput, Ritu Singh, Feng, Qiyang, Ramesh, Saravanan, Wang, Yuzhuang, Krishnan, Sasirekha, Ostrovidov, Serge, Camci-Unal, Gulden, and Ramalingam, Murugan

Subjects
Engineering, Biomedical Engineering, Regenerative Medicine, Bioengineering, Biotechnology, Nanotechnology, Development of treatments and therapeutic interventions, 5.2 Cellular and gene therapies, Musculoskeletal, Alloys, Animals, Biocompatible Materials, Bone Substitutes, Bone and Bones, Humans, Lasers, Nanostructures, Printing, Three-Dimensional, Regeneration, Stereolithography, Tissue Engineering, Titanium, 3D printing, artificial bone, biomaterials, bone tissue engineering, nanomaterials, Biochemistry and Cell Biology, Pharmacology and Pharmaceutical Sciences, Nanoscience & Nanotechnology, Medical biotechnology, Biomedical engineering
Abstract

Recent developments in three-dimensional (3D) printing technology offer immense potential in fabricating scaffolds and implants for various biomedical applications, especially for bone repair and regeneration. As the availability of autologous bone sources and commercial products is limited and surgical methods do not help in complete regeneration, it is necessary to develop alternative approaches for repairing large segmental bone defects. The 3D printing technology can effectively integrate different types of living cells within a 3D construct made up of conventional micro- or nanoscale biomaterials to create an artificial bone graft capable of regenerating the damaged tissues. This article reviews the developments and applications of 3D printing in bone tissue engineering and highlights the numerous conventional biomaterials and nanomaterials that have been used in the production of 3D-printed scaffolds. A comprehensive overview of the 3D printing methods such as stereolithography (SLA), selective laser sintering (SLS), fused deposition modeling (FDM), and ink-jet 3D printing, and their technical and clinical applications in bone repair and regeneration has been provided. The review is expected to be useful for readers to gain an insight into the state-of-the-art of 3D printing of bone substitutes and their translational perspectives.

Published
2021

36. Study on Big Graph Traversals for Storage Medium Optimization

Author

JIAO Tianzhe, HE Hongyan, ZHANG Zexin, SONG Jie

Subjects
graph traversal, solid state disk, cache hit rate, heuristic, lifetime, Computer software, QA76.75-76.765, Technology (General), T1-995
Abstract

As the basis of many algorithms,the breadth-first search(BFS) algorithm for big graph data has attracted more and more interests industrially and academically.Among the researches on BFS for the big graph,the solid state disk(SSD) is utilized to improve algorithm performance.In the graph traversal,the storage devices are required to continuously and repeatedly load data to fulfill the demand of graph traversal.However,many operations of data wipe caused by continuously and repeatedly loading data severely degrade the lifetime of SSD.For this reason,the lifetime of SSD can be effectively extended by reducing the data for write operations.Firstly,combined with the characteristics of graph structure,the data reuse model is constructed for describing the levels of data reuse in graph traversal.Then,a heuristic priority access algorithm based on vertex degree is proposed.By judging the independence of vertexes,the proposed algorithm selects graph vertexes that are priority accessed for improving the probability of data reusing,increasing hit ratio,and reducing the wear of flash memory.This method is available to any BFS algorithms and datasets without modifying BFS algorithm and big graph data.In the end,simulation results demonstrate that the proposed model and algorithm are effective.By applying the proposed algorithm on three common BFS algorithms:BFS-4K,B40C,and Gunrock,it can effectively reduce the operations of data written in graph traversal and improve the lifetime of SSD 12%,15%,22%,respectively.

Published
2023
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44. Sequential drug release via chemical diffusion and physical barriers enabled by hollow multishelled structures.

Author

Zhao, Decai, Yang, Nailiang, Wei, Yan, Jin, Quan, Wang, Yanlei, He, Hongyan, Yang, Yang, Han, Bing, Zhang, Suojiang, and Wang, Dan

Subjects
Escherichia coli, Thiazoles, Delayed-Action Preparations, Drug Carriers, Anti-Bacterial Agents, Microbial Sensitivity Tests, Drug Compounding, Microspheres, Diffusion, Nanostructures, Drug Liberation
Abstract

Hollow multishelled structures (HoMSs), with relatively isolated cavities and hierarchal pores in the shells, are structurally similar to cells. Functionally inspired by the different transmission forms in living cells, we studied the mass transport process in HoMSs in detail. In the present work, after introducing the antibacterial agent methylisothiazolinone (MIT) as model molecules into HoMSs, we discover three sequential release stages, i.e., burst release, sustained release and stimulus-responsive release, in one system. The triple-shelled structure can provide a long sterility period in a bacteria-rich environment that is nearly 8 times longer than that of the pure antimicrobial agent under the same conditions. More importantly, the HoMS system provides a smart responsive release mechanism that can be triggered by environmental changes. All these advantages could be attributed to chemical diffusion- and physical barrier-driven temporally-spatially ordered drug release, providing a route for the design of intelligent nanomaterials.

Published
2020

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