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589 results on '"GAO Guanjun"'

1. Economic Modeling and Fast Planning Algorithm of Undersea Optical Cable System

Author

GAO Wenjing and GAO Guanjun

Subjects
undersea optical cable communication system, economic modeling, genetic algorithm, lexicographic method, Applied optics. Photonics, TA1501-1820
Abstract

【Objective】Undersea optical cable plays a leading role in international communication. In the planning of undersea optical cable communication system, several groups of possible schemes are often determined according to experience. The scheme with relatively better transmission performance and investment cost is then selected. However, with the development of communication equipment and communication technology, the number of optional modulation formats and optical fibers keeps are increasing. The number of alternative schemes is too large to quickly determine the optimal scheme. Therefore, it is necessary to establish a cost optimization model of undersea optical cable communication system to solve the cost optimal scheme.【Methods】Aiming at the problem of system planning and configuration in the undersea optical cable communication system, a cost optimization model considering the parameters of transmission performance, transmission capacity and supply voltage is established by taking the span length, optical fiber type, number of optical fiber pairs, repeater output power, modulation format and number of practical channels as the variables. The cascaded-lexicographic method is used to solve the cost optimization model.【Results】The results show that the difference between the planning results of the proposed optimization algorithm and full traversal algorithm are no more than 0.34%. However, the number of operations of the optimization algorithm proposed in this paper is far less than that of the full traversal algorithm, with only 1/100 of that of the full traversal algorithm. Secondly, the number of operations of the cascade genelexicography method is less affected by the range of variables than that of the total traversal method. Finally, by comparing the optimal cost of the undersea cable communication system under different span length, it is found that the planning results have no regularity.【Conclusion】The variables always influence each other. The optimal cost design of the system cannot be obtained according to experience, so it needs to establish a model. The algorithm used in this paper is not only accurate, but also uses fewer operation times.

Published
2024
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3. Long-term and Real-time High-speed Underwater Wireless Optical Communications in Deep Sea

Author

Zhang, Jialiang, Wang, Sujing, Ma, Ziqi, Gao, Guanjun, Guo, Yonggang, Zhang, Fei, Huang, Shanguo, and Zhang, Jie

Subjects
Computer Science - Networking and Internet Architecture, Physics - Optics
Abstract

Seafloor observation network can perform all-weather, long-term, continuous, real-time, and in-situ observation of the ocean by combing various observation methods including cabled seafloor nodes, self-contained nodes, as well as mobile platforms, where reliable and long-term high-speed underwater wireless communication becomes an essential demand. Recently, underwater wireless optical communication (UWOC) has emerged as a highly promising solution and is rapidly becoming a research hotspot for meeting this requirement. In this article, we demonstrate the experiment and application of high-speed UWOC system for deep sea seafloor observation network. To the best of our knowledge this is the first long-term real-time deep-sea UWOC link with bitrate as high as 125 Mbps. Between 30 m distance and at a depth of 1650 m, two-way Ethernet UWOC links are realized with 125 Mbps direction-adjustable green light link and 6.25 Mbps non-line-of-sight (NLOS) blue light link. High quality video transmission of 8K 30 FPS and 4K 120 FPS are realized through high-speed 125 Mbps green light link, with 100% peak signal-to-noise ratio (PSNR) agreement, showing the capability of transmitting high-quality videos lossless. The 30-day long-term measurement results show that the BER performance of both 125 Mbps and 6.25 Mbps links is lower than 10-5, proving the stability and reliability of this UWOC system at depth of 1650 m. The maximum transmission distance for the green and blue light links are estimated to be 117.7 and 128.3 m with considering the geometry loss, which can be extended to 231.6 and 337.5 m without geometry loss. As the first long-term and real-time UWOC system in deep sea, we believe this demonstration can provide valuable experience for further UWOC studies and converged ocean observation networking with cabled and cable-less observation platforms.

Published
2023
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11. Natural variation in OsMADS1 transcript splicing affects rice grain thickness and quality by influencing monosaccharide loading to the endosperm

Author

Liu, Rongjia, Zhao, Da, Li, Pingbo, Xia, Duo, Feng, Qingfei, Wang, Lu, Wang, Yipei, Shi, Huan, Zhou, Yin, Chen, Fangying, Lou, Guangming, Yang, Hanyuan, Gao, Haozhou, Wu, Bian, Chen, Junxiao, Gao, Guanjun, Zhang, Qinglu, Xiao, Jinghua, Li, Xianghua, Xiong, Lizhong, Li, Yibo, Li, Zichao, You, Aiqing, and He, Yuqing

Published
2024
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17. Natural variation of WBR7 confers rice high yield and quality by modulating sucrose supply in sink organs.

Author

Shi, Huan, Yun, Peng, Zhu, Yun, Wang, Lu, Wang, Yipei, Li, Pingbo, Zhou, Hao, Cheng, Shiyuan, Liu, Rongjia, Gao, Guanjun, Zhang, Qinglu, Xiao, Jinghua, Li, Yibo, Xiong, Lizhong, You, Aiqing, and He, Yuqing

Subjects
RICE quality, GRAIN yields, BIOCHEMICAL substrates, RATE setting, SUCROSE
Abstract

Summary: Grain chalkiness is an undesirable trait that negatively regulates grain yield and quality in rice. However, the regulatory mechanism underlying chalkiness is complex and remains unclear. We identified a positive regulator of white‐belly rate (WBR). The WBR7 gene encodes sucrose synthase 3 (SUS3). A weak functional allele of WBR7 is beneficial in increasing grain yield and quality. During the domestication of indica rice, a functional G/A variation in the coding region of WBR7 resulted in an E541K amino acid substitution in the GT‐4 glycosyltransferase domain, leading to a significant decrease in decomposition activity of WBR7A (allele in cultivar Jin23B) compared with WBR7G (allele in cultivar Beilu130). The NIL(J23B) and knockout line NIL(BL130)KO exhibited lower WBR7 decomposition activity than that of NIL(BL130) and NIL(J23B)COM, resulting in less sucrose decomposition and metabolism in the conducting organs. This caused more sucrose transportation to the endosperm, enhancing the synthesis of storage components in the endosperm and leading to decreased WBR. More sucrose was also transported to the anthers, providing sufficient substrate and energy supply for pollen maturation and germination, ultimately leading to an increase rate of seed setting and increased grain yield. Our findings elucidate a mechanism for enhancing rice yield and quality by modulating sucrose metabolism and allocation, and provides a valuable allele for improved rice quality. [ABSTRACT FROM AUTHOR]

Published
2024
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31. Self-homodyne Spatial Super-Channel Based Spectrum and Core Assignment in Spatial Division Multiplexing Optical Networks

Author

Zhu, Ye, Zhao, Yongli, Wang, Wei, Yu, Xiaosong, Gao, Guanjun, Zhang, Jie, Akan, Ozgur, Editorial Board Member, Bellavista, Paolo, Editorial Board Member, Cao, Jiannong, Editorial Board Member, Coulson, Geoffrey, Editorial Board Member, Dressler, Falko, Editorial Board Member, Ferrari, Domenico, Editorial Board Member, Gerla, Mario, Editorial Board Member, Kobayashi, Hisashi, Editorial Board Member, Palazzo, Sergio, Editorial Board Member, Sahni, Sartaj, Editorial Board Member, Shen, Xuemin (Sherman), Editorial Board Member, Stan, Mircea, Editorial Board Member, Jia, Xiaohua, Editorial Board Member, Zomaya, Albert Y., Editorial Board Member, Chen, Qianbin, editor, Meng, Weixiao, editor, and Zhao, Liqiang, editor

Published
2018
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37. Comparative analysis of the transcriptome across distant species.

Author

Gerstein, Mark B, Rozowsky, Joel, Yan, Koon-Kiu, Wang, Daifeng, Cheng, Chao, Brown, James B, Davis, Carrie A, Hillier, LaDeana, Sisu, Cristina, Li, Jingyi Jessica, Pei, Baikang, Harmanci, Arif O, Duff, Michael O, Djebali, Sarah, Alexander, Roger P, Alver, Burak H, Auerbach, Raymond, Bell, Kimberly, Bickel, Peter J, Boeck, Max E, Boley, Nathan P, Booth, Benjamin W, Cherbas, Lucy, Cherbas, Peter, Di, Chao, Dobin, Alex, Drenkow, Jorg, Ewing, Brent, Fang, Gang, Fastuca, Megan, Feingold, Elise A, Frankish, Adam, Gao, Guanjun, Good, Peter J, Guigó, Roderic, Hammonds, Ann, Harrow, Jen, Hoskins, Roger A, Howald, Cédric, Hu, Long, Huang, Haiyan, Hubbard, Tim JP, Huynh, Chau, Jha, Sonali, Kasper, Dionna, Kato, Masaomi, Kaufman, Thomas C, Kitchen, Robert R, Ladewig, Erik, Lagarde, Julien, Lai, Eric, Leng, Jing, Lu, Zhi, MacCoss, Michael, May, Gemma, McWhirter, Rebecca, Merrihew, Gennifer, Miller, David M, Mortazavi, Ali, Murad, Rabi, Oliver, Brian, Olson, Sara, Park, Peter J, Pazin, Michael J, Perrimon, Norbert, Pervouchine, Dmitri, Reinke, Valerie, Reymond, Alexandre, Robinson, Garrett, Samsonova, Anastasia, Saunders, Gary I, Schlesinger, Felix, Sethi, Anurag, Slack, Frank J, Spencer, William C, Stoiber, Marcus H, Strasbourger, Pnina, Tanzer, Andrea, Thompson, Owen A, Wan, Kenneth H, Wang, Guilin, Wang, Huaien, Watkins, Kathie L, Wen, Jiayu, Wen, Kejia, Xue, Chenghai, Yang, Li, Yip, Kevin, Zaleski, Chris, Zhang, Yan, Zheng, Henry, Brenner, Steven E, Graveley, Brenton R, Celniker, Susan E, Gingeras, Thomas R, and Waterston, Robert

Subjects
Chromatin, Animals, Humans, Drosophila melanogaster, Caenorhabditis elegans, Histones, RNA, Untranslated, Cluster Analysis, Gene Expression Profiling, Sequence Analysis, RNA, Gene Expression Regulation, Developmental, Larva, Pupa, Models, Genetic, Promoter Regions, Genetic, Molecular Sequence Annotation, Transcriptome, Genetics, Human Genome, Generic health relevance, General Science & Technology
Abstract

The transcriptome is the readout of the genome. Identifying common features in it across distant species can reveal fundamental principles. To this end, the ENCODE and modENCODE consortia have generated large amounts of matched RNA-sequencing data for human, worm and fly. Uniform processing and comprehensive annotation of these data allow comparison across metazoan phyla, extending beyond earlier within-phylum transcriptome comparisons and revealing ancient, conserved features. Specifically, we discover co-expression modules shared across animals, many of which are enriched in developmental genes. Moreover, we use expression patterns to align the stages in worm and fly development and find a novel pairing between worm embryo and fly pupae, in addition to the embryo-to-embryo and larvae-to-larvae pairings. Furthermore, we find that the extent of non-canonical, non-coding transcription is similar in each organism, per base pair. Finally, we find in all three organisms that the gene-expression levels, both coding and non-coding, can be quantitatively predicted from chromatin features at the promoter using a 'universal model' based on a single set of organism-independent parameters.

Published
2014

41. Improvement of Rice Blast Resistance in TGMS Line HD9802S through Optimized Anther Culture and Molecular Marker-Assisted Selection

Author

Chen, Pingli, primary, Gao, Guanjun, additional, Lou, Guangming, additional, Hu, Jie, additional, Wang, Yufu, additional, Liu, Rongjia, additional, Zhao, Da, additional, Liu, Qing, additional, Sun, Bingrui, additional, Mao, Xingxue, additional, Jiang, Liqun, additional, Zhang, Jing, additional, Lv, Shuwei, additional, Yu, Hang, additional, Chen, Wenfeng, additional, Fan, Zhilan, additional, Li, Chen, additional, and He, Yuqing, additional

Published
2023
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