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1,171 results on '"Zhang, Wenping"'

11. RPR-Net: A Point Cloud-based Rotation-aware Large Scale Place Recognition Network

Author

Fan, Zhaoxin, Song, Zhenbo, Zhang, Wenping, Liu, Hongyan, He, Jun, and Du, Xiaoyong

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

Point cloud-based large scale place recognition is an important but challenging task for many applications such as Simultaneous Localization and Mapping (SLAM). Taking the task as a point cloud retrieval problem, previous methods have made delightful achievements. However, how to deal with catastrophic collapse caused by rotation problems is still under-explored. In this paper, to tackle the issue, we propose a novel Point Cloud-based Rotation-aware Large Scale Place Recognition Network (RPR-Net). In particular, to solve the problem, we propose to learn rotation-invariant features in three steps. First, we design three kinds of novel Rotation-Invariant Features (RIFs), which are low-level features that can hold the rotation-invariant property. Second, using these RIFs, we design an attentive module to learn rotation-invariant kernels. Third, we apply these kernels to previous point cloud features to generate new features, which is the well-known SO(3) mapping process. By doing so, high-level scene-specific rotation-invariant features can be learned. We call the above process an Attentive Rotation-Invariant Convolution (ARIConv). To achieve the place recognition goal, we build RPR-Net, which takes ARIConv as a basic unit to construct a dense network architecture. Then, powerful global descriptors used for retrieval-based place recognition can be sufficiently extracted from RPR-Net. Experimental results on prevalent datasets show that our method achieves comparable results to existing state-of-the-art place recognition models and significantly outperforms other rotation-invariant baseline models when solving rotation problems., Comment: Accept to ECCV 2022 AVVision Workshop

Published
2021

19. Knowledge Graph Construction in Logistics Based on Multi-source Data Fusion

Author

Gao, Xinyu, Zhang, Li, Zhang, Wenping, Chen, Haoxuan, Ceccarelli, Marco, Series Editor, Agrawal, Sunil K., Advisory Editor, Corves, Burkhard, Advisory Editor, Glazunov, Victor, Advisory Editor, Hernández, Alfonso, Advisory Editor, Huang, Tian, Advisory Editor, Jauregui Correa, Juan Carlos, Advisory Editor, Takeda, Yukio, Advisory Editor, Zhang, Hao, editor, Ji, Yongjian, editor, Liu, Tongtong, editor, Sun, Xiuquan, editor, and Ball, Andrew David, editor

Published
2023
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20. RPR-Net: A Point Cloud-Based Rotation-Aware Large Scale Place Recognition Network

Author

Fan, Zhaoxin, Song, Zhenbo, Zhang, Wenping, Liu, Hongyan, He, Jun, Du, Xiaoyong, 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, Karlinsky, Leonid, editor, Michaeli, Tomer, editor, and Nishino, Ko, editor

Published
2023
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35. A comparative study of the beliefs about, and practices of, secondary school mathematics in England and China concerning teacher questioning

Author

Zhang, Wenping

Subjects
510.71, L Education (General), LB Theory and practice of education
Abstract

Teacher questioning as a fundamental element of pedagogy has been long recognised, but has been under-researched inter-culturally especially in the context of England and China. The literature suggests that a teacher asks a significant amount of questions every day in lessons, although it does not say why a teacher asks questions. Teachers could see questioning as a pedagogic tool to facilitate their teaching, or they could ask questions just out of habit. By making a comparison between two countries, this exploratory study aims to examine the cultural differences and similarities underpinning the use of teacher questioning. The participants in the study were 11 mathematics teachers in two lower secondary schools in England and 12 mathematics teachers in two lower secondary schools in China and data collection took place during the year 2015-2016. A qualitative research approach was adopted to include both classroom observations of teaching and follow-up semi-structured interviews with the teachers. All observations and interviews were audiotaped. The follow-up interviews with the teachers also sought to get some clarifications of and justifications for the teacher questioning behaviours observed in order to verify possible interpretations of classroom practices by reference to the teachers’ perspectives. The findings suggest significant differences and similarities between the English and Chinese mathematics teachers’ questioning use. Teacher questioning was pervasive in both classrooms, and the questions asked were predominantly managerial and ‘information-seeking’. Teachers in England valued questioning highly, were also more aware of and reflective about their questioning behaviours, and seemed to possess more profound pedagogical competence than their Chinese counterparts. In general, the English mathematics teachers displayed a student-centred/inquiry-based questioning that adjusted questions to accommodate students with diversity of learning abilities. The Chinese teachers, meanwhile, were less positive about questioning, placing a great deal of weight on the importance of having profound mathematical content knowledge, and presented a relatively traditional teacher-centred/content-based approach to questioning. The findings bring some insights into the nature of questioning from social and cultural perspectives. The investigation of the relationship between teacher beliefs and practices has the potential to provide some suggestions for policy makers and educators for future teacher training in improving teachers’ self-awareness and reflectiveness of their repertoire of questioning skills.

Published
2019

38. Insights for the Captive Management of South China Tigers Based on a Large-Scale Genetic Survey

Author

Zhang, Wenping, primary, Lin, Kaixiong, additional, Fu, Wenyuan, additional, Xie, Junjin, additional, Fan, Xueyang, additional, Zhang, Mingchun, additional, Luo, Hongxing, additional, Yin, Yuzhong, additional, Guo, Qiang, additional, Huang, He, additional, Chen, Tengteng, additional, Lin, Xipan, additional, Yuan, Yaohua, additional, Huang, Cheng, additional, and Du, Shizhang, additional

Published
2024
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41. Signatures of selection in recently domesticated macadamia

Author

Lin, Jishan, Zhang, Wenping, Zhang, Xingtan, Ma, Xiaokai, Zhang, Shengcheng, Chen, Shuai, Wang, Yibin, Jia, Haifeng, Liao, Zhenyang, Lin, Jing, Zhu, Mengting, Xu, Xiuming, Cai, Mingxing, Zeng, Hui, Wan, Jifeng, Yang, Weihai, Matsumoto, Tracie, Hardner, Craig, Nock, Catherine J., and Ming, Ray

Published
2022
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46. Leveraging Artificial Intelligence in Medicine Compliance Check

Author

Jia, Guoping, Zhu, Wei, Tang, JinJun, Zhang, Wenping, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Nah, Fiona Fui-Hoon, editor, and Siau, Keng, editor

Published
2021
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48. Complete Mitochondrial Genome and Phylogenetic Analysis of the Blue Whistling Thrush (Myophonus caeruleus).

Author

Yuan, Zhenfeng, Liu, Peng, Lu, Xi, Zhu, Dong, Liu, Jun, Guo, Qiang, Zhang, Wenping, and Duan, Yubao

Abstract

The blue whistling thrush (Myophonus caeruleus) is a bird belonging to the order Passeriformes and family Muscicapidae. M. caeruleus is widely distributed in China, Pakistan, India, and Myanmar and is a resident bird in the southern part of the Yangtze River in China and summer migratory bird in the northern part of the Yangtze River. At present, there are some controversies about the classification of M. caeruleus. We use complete mitochondrial genomes to provide insights into the phylogenetic position of M. caeruleus and its relationships among Muscicapidae. The mitochondrial genome (GenBank: MN564936) is 16,815 bp long and contains 13 protein-coding genes (PCGs), 2 rRNA genes, 22 tRNA genes, and a non-coding control region (D-loop). The thirteen PCGs started with GTG and ATG and ended with five types of stop codons. The nucleotide composition of T was 23.71%, that of C was 31.45%, that of A was 30.06%, and that of G was 14.78%. The secondary structures of 22 tRNAs were predicted, all of which could form typical cloverleaf structures. There were 24 mismatches, mainly G–U mismatches. Through phylogenetic tree reconstruction, it was found that Saxicola, Monticola, Oenanthe, and Phoenicurus were clustered into one clade, together with the sister group of Myophonus. [ABSTRACT FROM AUTHOR]

Published
2024
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49. Genome-Wide Association Analysis of Yield-Related Traits and Candidate Genes in Vegetable Soybean.

Author

Gao, Hongtao, Wu, Guanji, Wu, Feifei, Zhou, Xunjun, Zhou, Yonggang, Xu, Keheng, Li, Yaxin, Zhang, Wenping, Zhao, Kuan, Jing, Yan, Feng, Chen, Wang, Nan, and Li, Haiyan

Subjects
GENOME-wide association studies, SOYBEAN, TRANSCRIPTION factors, SINGLE nucleotide polymorphisms, SOYBEAN products, GENES
Abstract

Owing to the rising demand for vegetable soybean products, there is an increasing need for high-yield soybean varieties. However, the complex correlation patterns among quantitative traits with genetic architecture pose a challenge for improving vegetable soybean through breeding. Herein, a genome-wide association study (GWAS) was applied to 6 yield-related traits in 188 vegetable soybean accessions. Using a BLINK model, a total of 116 single nucleotide polymorphisms (SNPs) were identified for plant height, pod length, pod number, pod thickness, pod width, and fresh pod weight. Furthermore, a total of 220 genes were found in the 200 kb upstream and downstream regions of significant SNPs, including 11 genes encoding functional proteins. Among them, four candidate genes, Glyma.13G109100, Glyma.03G183200, Glyma.09G102200, and Glyma.09G102300 were analyzed for significant haplotype variations and to be in LD block, which encode MYB-related transcription factor, auxin-responsive protein, F-box protein, and CYP450, respectively. The relative expression of candidate genes in V030 and V071 vegetable soybean (for the plant height, pod number, and fresh pod weight of V030 were lower than those of the V071 strains) was significantly different, and these genes could be involved in plant growth and development via various pathways. Altogether, we identified four candidate genes for pod yield and plant height from vegetable soybean germplasm. This study provides insights into the genomic basis for improving soybean and crucial genomic resources that can facilitate genome-assisted high-yielding vegetable soybean breeding. [ABSTRACT FROM AUTHOR]

Published
2024
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50. Gene Regulatory Network Controlling Flower Development in Spinach (Spinacia oleracea L.).

Author

Ma, Yaying, Fu, Wenhui, Wan, Suyan, Li, Yikai, Mao, Haoming, Khalid, Ehsan, Zhang, Wenping, and Ming, Ray

Subjects
GENE regulatory networks, SPINACH, FLOWER development, SEX determination, MORPHOGENESIS, PLANT hormones, ABSCISIC acid, POLLINATORS
Abstract

Spinach (Spinacia oleracea L.) is a dioecious, diploid, wind-pollinated crop cultivated worldwide. Sex determination plays an important role in spinach breeding. Hence, this study aimed to understand the differences in sexual differentiation and floral organ development of dioecious flowers, as well as the differences in the regulatory mechanisms of floral organ development of dioecious and monoecious flowers. We compared transcriptional-level differences between different genders and identified differentially expressed genes (DEGs) related to spinach floral development, as well as sex-biased genes to investigate the flower development mechanisms in spinach. In this study, 9189 DEGs were identified among the different genders. DEG analysis showed the participation of four main transcription factor families, MIKC_MADS, MYB, NAC, and bHLH, in spinach flower development. In our key findings, abscisic acid (ABA) and gibberellic acid (GA) signal transduction pathways play major roles in male flower development, while auxin regulates both male and female flower development. By constructing a gene regulatory network (GRN) for floral organ development, core transcription factors (TFs) controlling organ initiation and growth were discovered. This analysis of the development of female, male, and monoecious flowers in spinach provides new insights into the molecular mechanisms of floral organ development and sexual differentiation in dioecious and monoecious plants in spinach. [ABSTRACT FROM AUTHOR]

Published
2024
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