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| 1 | Ship Detection and Recognition Based on Improved YOLOv7显示文摘In this paper,an advanced YOLOv7 model is proposed to tackle the challenges associated with ship detection and recognition tasks,such as the irregular shapes and varying sizes of ships.The improved model replaces the fixed anchor boxes utilized in conventional YOLOv7 models with a set of more suitable anchor boxes specifically designed based on the size distribution of ships in the dataset.This paper also introduces a novel multi-scale feature fusion module,which comprises Path Aggregation Network(PAN)modules,enabling the efficient capture of ship features across different scales.Furthermore,data preprocessing is enhanced through the application of data augmentation techniques,including random rotation,scaling,and cropping,which serve to bolster data diversity and robustness.The distribution of positive and negative samples in the dataset is balanced using random sampling,ensuring a more accurate representation of real-world scenarios.Comprehensive experimental results demonstrate that the proposed method significantly outperforms existing state-of-the-art approaches in terms of both detection accuracy and robustness,highlighting the potential of the improved YOLOv7 model for practical applications in the maritime domain. | Wei Wu Xiulai Li Zhuhua Hu Xiaozhang Liu | 2023 | Computers, Materials & Continua2023,,7: | 1 |
| 2 | Charge-injection induced magnetism and half metallicity in single-layer hexagonal group Ⅲ / Ⅴ (BN,BP,AIN,AIP) systems显示文摘 | Wu Menghao Zhang Zhuhua Zeng Xiaocheng | 2010 | Applied Physics Letters2010,97,09: | 1 |
| 3 | Research Progress for Kitchen Cleaner显示文摘The formation of kitchen greasy dirt was expounded, and the different types of kitchen cleaner and common products were introduced. At last, the development trend for kitchen cleaner was prospected. | Tai Xiumei Xu Bin Wu Jiren Tang Zhuhua Cheng Yan Si Zuoxue Hou Meifang | 2017 | China Detergent & Cosmetics2017,2,2: | 0 |
| 4 | Exploring Hybrid Genetic Algorithm Based Large-Scale Logistics Distribution for BBG Supermarket显示文摘In the large-scale logistics distribution of single logistic center,the method based on traditional genetic algorithm is slow in evolution and easy to fall into the local optimal solution.Addressing at this issue,we propose a novel approach of exploring hybrid genetic algorithm based large-scale logistic distribution for BBG supermarket.We integrate greedy algorithm and hillclimbing algorithm into genetic algorithm.Greedy algorithm is applied to initialize the population,and then hill-climbing algorithm is used to optimize individuals in each generation after selection,crossover and mutation.Our approach is evaluated on the dataset of BBG Supermarket which is one of the top 10 supermarkets in China.Experimental results show that our method outperforms some other methods in the field. | Yizhi Liu Rutian Qing Liangran Wu Min Liu Zhuhua Liao Yijiang Zhao | 2021 | Journal on Artificial Intelligence2021,3,1: | 0 |
| 5 | 吡咯吲哚霉素生源合成过程中催化反式十氢萘生成的黄素腺嘌呤二核苷酸依赖的[4+2]环化酶的结构透视显示文摘文章简介PyrE3是一个在吡咯吲哚霉素生源合成过程中催化反式十氢萘生成的黄素腺嘌呤二核苷酸依赖的[4+2]环化酶,在这里我们提供对PyrE3的结构透视。Pyr E3与对羟基苯甲酸羟化酶折叠型单倍加氧酶家族成员分享类似的从头到尾的结构域组成,含有一个黄素腺嘌呤二核苷酸结合结构域、一个中间结构域和一个C端类似硫氧还蛋白的结构域。 | Qingfei Zheng Yukang Gong Yujiao Guo Zhixiong Zhao Zhuhua Wu Zixuan Zhou Dandan Chen 潘李锋 刘文 | 2019 | 科学新闻2019,0,2: | 0 |
| 6 | Identification of a candidate elongation related gene in rice induced by GA_3显示文摘We identified a gibberellin-induced gene frag-ment in rice elongation by using differentialdisplay(DD)of mRNA.The rice seedlingscarried the eui(elongated)gene,named Zhen-chang A,were used,which were sensitive toGA_3 and elongated rapidly after application | MO Xiaorong WU Yuliang DONG Haitao CHENG Zhiqiang DONG Jixin HE Zhuhua LI Debao,Biotechnology Inst,Zhejiang Univ,Hangzhou 310029,China | 1999 | Chinese Rice Research Newsletter1999,7,3: | 0 |
| 7 | Particle size shapes the prokaryotic microbial communities in mangrove sediments:A case study of Sanya,China显示文摘The prokaryotic microbial communities in the sediments play crucial roles in the ecological functions of mangrove ecosystems.Therefore,the environmental factors that affect the structures of these prokaryotic microbial communities could indirectly participate in the regulation of mangrove functions,which is of great value for mangrove studies.The particle size(PS)of soils is recently demonstrated as a key environmental factor for shaping the microbial communities;however,this hypothesis has rarely been tested for mangrove environments.A case study of three tropical mangroves from Sanya,China was performed in this work to assess the influence of PS on the prokaryotic microbial community structures of bacteria,archaea,diazotrophs,and denitrifiers in the sediments.Results showed the variability in the spatial scale and the stability in the temporal scale for the prokaryotic communities,indicating that the tropical mangrove sediments could be a versatile but stable environment.Among the collected environmental factors,PS,salinity,and humidity had the greatest impacts,and PS mostly affected the structures of these prokaryotic communities based on its highest R^2 values of canonical correspondence analysis,Mental test,and linear fitting(p≤0.05).Furthermore,PS was positively correlated with the diversity and abundance of diazotrophic communities and negatively correlated with the abundances of methanogenic communities including Methanobacteriaceae,Methanospirillaceae,Methanoregulaceae,and Methanosaetaceae.Former studies show the increasing trend of PS caused by the rise of sea level and the intensification of human activities.Therefore,our findings indicate that PS could be a potential intermediate that links climate change and human activities with the possible ecological function migration of mangroves;meanwhile,the increase of PS could in turn release the stress of these environmental changes by increasing the abundance and diversity of the diazotrophic community and decreasing the abundances of methanogens. | Wu Qu Michael Vicent Shija Jie Wu Min Jin Jianxin Wang Runying Zeng Zhuhua Chan | 2022 | Acta Oceanologica Sinica2022,41,8: | 0 |