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Reproduction of the Three-line Genic Male Sterile Line Parent Mian 7MB-1 (Brasscia Napus L.) and Seed Production of F1 Based on Somatic Tissue Culture 认领 引用 被引量:19
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作者 蒙大庆 袁代斌 +7 位作者 张跃非 郭子荣 胥岚 李芝凡 蒲定福 汤天泽 贺启川 陈军 《Agricultural Science & Technology》 CAS 2009年第1期22-25,114,共4页
[Objective] The aim was to study the reproduction of the three-line genic male sterile (GMS) lineparent Mian7MB-1 (B. NapusL.) and the seed production of F1 through somatic tissue culture. [Methed] Through hybridi... [Objective] The aim was to study the reproduction of the three-line genic male sterile (GMS) lineparent Mian7MB-1 (B. NapusL.) and the seed production of F1 through somatic tissue culture. [Methed] Through hybridization, a new breeding material Mian 7MB-1 in three-line genic temporary maintainer line propagated by tissue culture was used to improve the sterile plant rate of rapeseed in dual-purpose recessive GMS line, such as Mian 7AB type, S45AB type, and etc. And then the variety comparative test was performed. [Result] In order to avoid some fertility restoration phenomena occurring during the process of self-reproduction, Mian 7AB was propagated in bulk with somatic tissue culture of temporary maintainer line plant stem. The propagated temporary maintainer line seedlings were applied to the breeding and seed production of net room male sterile line parent, promoting the sterile plant rate of the male sterile line parent to 91.7% -93.5%. The male sterile line parents per hectare were enough for the seed production of hybrid F1 in 7 500 -15 000 hm^2. [ Conclusion ] Compared with the original dual-purpose GMS line, the seed production ultilizing male sterile line with high sterile plant rate greatly reduced the labor, significantly improved the seed yield, ensuring the seed quality and forming a perfect breeding and seed production system. 展开更多
关键词 B. Napus L. Tissue culture Three-line GMS Breeding and seed production
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Genetic and Correlation Analysis of Grain Characters in Three-line Hybrid Rice 认领 引用 被引量:12
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作者 邹小云 邓辉明 +6 位作者 傅军如 彭小松 朱昌兰 贺晓鹏 陈小荣 贺浩华 刘宜柏 《Agricultural Science & Technology》 CAS 2009年第2期77-81,共5页
Abst[Objective] This study was to understand the genetic dynamics of three-line hybrid rice, and explore the respective effect of sterile line and restoring line on grain characters of hybrid rica. [Method] Four three... Abst[Objective] This study was to understand the genetic dynamics of three-line hybrid rice, and explore the respective effect of sterile line and restoring line on grain characters of hybrid rica. [Method] Four three-line stedle lines and 27 restoring lines(cultivars) commonly culti- vated in Central China region were regarded as expadmental materials to conduct 4 x27NCII cross design, and the grain characters of three-line hybrid rico were analyzed at genetic and correlation levels. [ Result] Four characters of grain length, grain width, 1 000-grain weight and length- width ratio play the leading role in additive gene effect; these four characters were simultaneously influenced by male parent and female parent, but the effect from male parent was relatively larger. The grain length, grain width, 1 000-grain weight and length-width ratio all have high brood hedtabUities( respectively 99.65%, 98.31%, 95.27% and 98.81% ). Correlation analysis showed that grain length was positively correlated with 1 000-grain weight and length-width ratio at extremely significant level; 1 000-grain weight was positively correlated with grain length and length- width ratio at extremely significant level, and was insignificantly correlated with grain width; grain width was negatively correlated with grain length and length-width ratio at extremely significant level. Path analysis showed that the direct path coefficients of grain length, grain width and 1 0(30- grain weight to length-width ratio were 0.624 6, -0.555 9 and -0.015 8, respectively. [ Conclusion] This study systematically analyzed the effects of stedle line and restoring line on grain characters of hybrid rice, which provided theoretical basis for breeding high quality and yield hy- brid dce. 展开更多
关键词 Three-line hybrid dce Grain characters Inheritance . Correlation
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Technical Specification for Producing Hybrid Pepper Seed Using Three-line Male Sterility 认领 引用 被引量:1
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作者 李雪峰 梁成亮 +1 位作者 马艳青 邹学校 《Agricultural Science & Technology》 CAS 2015年第7期1378-1380,1384,共3页
This paper described the whole process of three line hybrid pepper seed production in detail, including requirement of the seed production base, parent culti- vation, field management, and specified the key operation ... This paper described the whole process of three line hybrid pepper seed production in detail, including requirement of the seed production base, parent culti- vation, field management, and specified the key operation techniques in seed pro- duction, such as parental impurity removal to preserve pure state, pollen collection, pollination and seed collecting essentials. This specification is of guiding significance for the production of hybrid pepper seed and ensuring the purity of hybrid pepper seed. 展开更多
关键词 Hybrid Pepper Three-line Cytoplasmic male sterility Seed production
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Vision-based Localization from Three-Line Structures (TLS) 认领 引用 被引量:1
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作者 Zhao-Zheng Hu Na Li 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2013年第3期48-55,共8页
This paper presents a novel vision based localization algorithm from three-line structure ( TLS) .Two types of TLS are investigated: 1) three parallel lines ( Structure I) ; 2) two parallel lines and one orthogonal li... This paper presents a novel vision based localization algorithm from three-line structure ( TLS) .Two types of TLS are investigated: 1) three parallel lines ( Structure I) ; 2) two parallel lines and one orthogonal line ( Structure II) .From single image of either structure,the camera pose can be uniquely computed for vision localization.Contributions of this paper are as follows: 1 ) both TLS structures can be used as simple and practical landmarks,which are widely available in daily life; 2) the proposed algorithm complements existing localization methods,which usually use complex landmarks,especially in the partial blockage conditions; 3) compared with the general Perspective-3-Lines ( P3L) problem,camera pose can be uniquely computed from either structure.The proposed algorithm has been tested with both simulation and real image data.For a typical simulated indoor condition ( 75 cm-size landmark,less than 7.0 m landmark-to-camera distance,and 0.5-pixel image noises) ,the means of localization errors from Structure I and Structure II are less than 3.0 cm.And the standard deviations are less than 3.0 cm and 1.5 cm,respectively.The algorithm is further validated with two actual image experiments.Within a 7.5 m × 7.5 m indoor situation,the overall relative localization errors from Structure I and Structure II are less than 2.2% and 2.3% ,respectively,with about 6.0 m distance.The results demonstrate that the algorithm works well for practical vision localization. 展开更多
关键词 vision-based localization three-line structure camera pose computer vision
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Image Motion Compensation of Off-Axis TMA Three-Line ArrayAerospace Mapping Cameras 认领 引用
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作者 Yongchang Li Pengluo Lu +2 位作者 Longxu Jin Guoning Li Yinan Wu 《Journal of Harbin Institute of Technology(New Series)》 CAS 2016年第6期80-89,共10页
To enhance the image motion compensation accuracy of off-axis three-mirror anastigmatic( TMA)three-line array aerospace mapping cameras,a new method of image motion velocity field modeling is proposed in this paper. F... To enhance the image motion compensation accuracy of off-axis three-mirror anastigmatic( TMA)three-line array aerospace mapping cameras,a new method of image motion velocity field modeling is proposed in this paper. Firstly,based on the imaging principle of mapping cameras,an analytical expression of image motion velocity of off-axis TMA three-line array aerospace mapping cameras is deduced from different coordinate systems we established and the attitude dynamics principle. Then,the case of a three-line array mapping camera is studied,in which the simulation of the focal plane image motion velocity fields of the forward-view camera,the nadir-view camera and the backward-view camera are carried out,and the optimization schemes for image motion velocity matching and drift angle matching are formulated according the simulation results. Finally,this method is verified with a dynamic imaging experimental system. The results are indicative of that when image motion compensation for nadir-view camera is conducted using the proposed image motion velocity field model,the line pair of target images at Nyquist frequency is clear and distinguishable. Under the constraint that modulation transfer function( MTF) reduces by 5%,when the horizontal frequencies of the forward-view camera and the backward-view camera are adjusted uniformly according to the proposed image motion velocity matching scheme,the time delay integration( TDI) stages reach 6 at most. When the TDI stages are more than 6,the three groups of camera will independently undergo horizontal frequency adjustment. However, when the proposed drift angle matching scheme is adopted for uniform drift angle adjustment,the number of TDI stages will not exceed 81. The experimental results have demonstrated the validity and accuracy of the proposed image motion velocity field model and matching optimization scheme,providing reliable basis for on-orbit image motion compensation of aerospace mapping cameras. 展开更多
关键词 three-line array mapping camera off-axis TMA image motion compensation image motion velocity drift angle
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Studies on the Developmental Genetics of Tiller Number in Three-line Indica Hybrid Rice 认领 引用 被引量:1
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作者 LIANG Kang-jing, LIN Wen-xiong, WANG Xue-ren, CHEN Zhi-xiong, GUO Yu-chun, LIANG Yi-yuan, CHEN Fang-yu and LI Ya-juan 《Agricultural Sciences in China》 2002年第8期837-844,共8页
Following NCI design, the developmental genetic behavior of tiller number (TN) in three-line indica hybrid rice was studied using additive-dominance developmental genetic models and the corresponding statistical metho... Following NCI design, the developmental genetic behavior of tiller number (TN) in three-line indica hybrid rice was studied using additive-dominance developmental genetic models and the corresponding statistical methods. The results showed that dominance effects were predominant for TN. The expression of those additive effects were affected by environment and genotype interaction, but the expression of dominance effects were not affected. Heterosis was the strongest in the middle developmental periods of TN. Additive effects and dominance effects were selectively expressed throughout in the entire tillering developmental stage. Analysis of genetic correlation between TN at different stages and the productive panicles indicated that a close correlation appeared earlier in the populations with higher heterosis than in those with less heterosis. Utilization of heterosis at the middle tillering stage might enhance the final biomass but reduce the percentage of productive panicles. 展开更多
关键词 Three-line indica hybrid rice Tiller number Developmental genetics Genetic variance Heterosis
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法典框架下生态环境分区管控制度的体系诠释与地方立法因应 认领 引用
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作者 俞金香 《地方立法研究》 CSSCI 2026年第3期35-48,共14页
生态环境分区管控是我国生态文明建设的一项重大制度创新,《生态环境法典》将其确立为生态环境源头预防体系的基础性制度。法典将生态环境分区管控从“三线一单”的十年政策实践升格为国家法律,构建了全球首个全域覆盖、清单准入、动态... 生态环境分区管控是我国生态文明建设的一项重大制度创新,《生态环境法典》将其确立为生态环境源头预防体系的基础性制度。法典将生态环境分区管控从“三线一单”的十年政策实践升格为国家法律,构建了全球首个全域覆盖、清单准入、动态更新的法定空间治理体系。但该规定主要侧重于原则确立与宏观指引,作为一项“空间落地型”制度,其生命力在于实施,而实施的关键在于地方立法承接。基于法典的制度定位与规范分析,地方立法应立足“因应”而非“复制”的逻辑,在细化“三线”目标的法律转化程序、准入清单的精准化与类型化、动态调整程序法治化、健全多元主体协同共治机制、数字赋能的信息平台建设等五个方面有所作为。厦门、海南等地的最新立法探索提供了有益镜鉴。未来地方立法应当通过实施性立法的具体制度设计,将法典的框架性规定转化为基层治理的可操作规则,从而真正释放“分区域、差异化、精准管控”的制度效能。 展开更多
关键词 生态环境法典 生态环境分区管控 “三线一单” 地方立法 制度实施
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“三线一单”政策背景下生态保护红线制度的问题检视与路径优化 认领 引用
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作者 张煜 蔺自豪 《国土与自然资源研究》 2026年第2期52-55,共4页
生态保护红线制度是我国“三线一单”政策中的重要举措,在其“落地”过程中面临诸多挑战,包括地方政府划定标准不统一、与国土空间规划衔接不足、与生态空间对应关系不明确和行政管理部门责任划分不清晰等问题。为应对这些问题,需通过... 生态保护红线制度是我国“三线一单”政策中的重要举措,在其“落地”过程中面临诸多挑战,包括地方政府划定标准不统一、与国土空间规划衔接不足、与生态空间对应关系不明确和行政管理部门责任划分不清晰等问题。为应对这些问题,需通过立法明确统一划定标准,完善生态保护红线制度与生态空间的有效衔接,并加强生态保护红线制度实践中的跨部门沟通机制,以确保生态保护红线制度的有效实施,为可持续发展和生态环境保护提供坚实基础。 展开更多
关键词 生态保护红线制度 “三线一单” 国土空间规划 环境保护 生态空间
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智能焊接技术专业课程思政育人体系构建 认领 引用
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作者 赵志远 戴志勇 +1 位作者 冯菁菁 房卉 《南方金属》 CAS 2026年第1期238-240,共3页
课程思政建设是高职院校落实立德树人根本任务的重要途径。聚焦智能焊接技术专业,亟待以“理想信念、职业素养、科学素养”为三条主线构建起专业化课程思政育人体系,围绕价值引领、能力培养与素质提升立体式开展系统设计。同时,从教学... 课程思政建设是高职院校落实立德树人根本任务的重要途径。聚焦智能焊接技术专业,亟待以“理想信念、职业素养、科学素养”为三条主线构建起专业化课程思政育人体系,围绕价值引领、能力培养与素质提升立体式开展系统设计。同时,从教学实施与实践育人两个维度入手,构建起“线上线下联动、课内课外贯通、校内校外协同”的多元协同路径,并建立“形成性+诊断性+终结性”的全过程评价机制。通过完善师资队伍、优化评价体系、建设数字资源库,提升课程思政的实效性与专业适配度,力求实现学生价值塑造、能力培养与知识传授的有机统一,为高职人才培养质量提升提供可复制的路径示范。 展开更多
关键词 高职院校 课程思政 智能焊接技术 三主线两维度 育人体系
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废铝破碎分拣线建设要点解析 认领 引用
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作者 郭庆 张卫红 +2 位作者 唐志实 王陆军 康冰 《再生资源与循环经济》 2026年第4期16-19,共4页
废铝破碎分拣线建设过程中如何提高废铝分拣率,是产线保证经济效应的核心问题;产线的智能化程度是保证废铝分拣率、降低加工成本的关键;环保问题,特别是除尘问题是产线顺利投产的前提条件。重点关注上述问题并结合本公司项目的实施提出... 废铝破碎分拣线建设过程中如何提高废铝分拣率,是产线保证经济效应的核心问题;产线的智能化程度是保证废铝分拣率、降低加工成本的关键;环保问题,特别是除尘问题是产线顺利投产的前提条件。重点关注上述问题并结合本公司项目的实施提出了分拣线建设要求,是上述问题较好的解决方案。 展开更多
关键词 废铝破碎分选线 “一提三降” 智能化 除尘系统
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Establishment of a novel engineering breeding technology for cytoplasmic male sterility 认领 引用 被引量:2
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作者 Na Xu Dong Yu +7 位作者 Longhui Zhang Tiankang Wang Zhongxiao Hu Quanqiang Lei Yingxin Qiu Zheming Yuan Shufeng Song Li Li 《The Crop Journal》 SCIE CAS CSCD 2025年第4期1305-1311,共7页
The three-line hybrid rice system,which relies on cytoplasmic male sterility(CMS),faces challenges in breeding efficiency.To address these challenges,we developed CMS engineering breeding technology(CEBT).First,we con... The three-line hybrid rice system,which relies on cytoplasmic male sterility(CMS),faces challenges in breeding efficiency.To address these challenges,we developed CMS engineering breeding technology(CEBT).First,we constructed a complementation vector containing the fertility restoration module Double Rf4-Rf20,sorting marker gene DsRed2,and pollen lethal gene ZmAA1,then transformed this into a CMS line.We obtained reproductive lines without alterations to main agronomic traits,which can produce engineering sterile lines(ESL)and reproductive line seeds at a 1:1 ratio by self-crossing.CEBT converts the traditional three-line system into an efficient‘new two-line’hybrid framework:the reproductive line is improved while simultaneously improving the ESL,which significantly shortens the breeding process for three-line hybrid rice. 展开更多
关键词 Three-line hybrid rice CMS-WA Rf gene CEBT Reproductive lines
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水旱灾害防御雨水情监测预报技术研究 认领 引用 被引量:26
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作者 刘志雨 张同强 《水利发展研究》 2025年第1期48-55,共8页
近年来,我国水旱灾害多发频发重发。雨水情监测预报信息是打好水旱灾害防御硬仗的重要依据。总结了我国雨水情监测预报技术进展与实践应用,介绍了水文监测预报预警特别是“四预”措施在防御重大水旱灾害中发挥的支撑作用,阐述了新形势... 近年来,我国水旱灾害多发频发重发。雨水情监测预报信息是打好水旱灾害防御硬仗的重要依据。总结了我国雨水情监测预报技术进展与实践应用,介绍了水文监测预报预警特别是“四预”措施在防御重大水旱灾害中发挥的支撑作用,阐述了新形势下水旱灾害防御雨水情监测预报面临的新形势新要求,提出了现代化雨水情监测预报体系建设的工作思路和亟须加强的几项重点工作。 展开更多
关键词 水旱灾害防御 雨水情监测预报体系 三道防线 水文新质生产力 水文现代化
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流域防洪“四预”业务流程与功能优化配置研究 认领 引用 被引量:5
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作者 刘国庆 范子武 +2 位作者 何健 高玉琴 袁山水 《水利信息化》 2025年第4期1-9,共9页
防洪“四预”作为数字孪生水利建设的出发点和落脚点,是流域防洪减灾智能化升级的重要手段。在数字孪生流域建设总体框架下,为优化和细化流域防洪业务流程与功能,基于文献梳理国内外流域防洪相关研究进展,提出现阶段防洪“四预”业务流... 防洪“四预”作为数字孪生水利建设的出发点和落脚点,是流域防洪减灾智能化升级的重要手段。在数字孪生流域建设总体框架下,为优化和细化流域防洪业务流程与功能,基于文献梳理国内外流域防洪相关研究进展,提出现阶段防洪“四预”业务流程和功能体系方面存在的问题。采用框架、流程、功能等设计方法,对防洪“四预”通用流程与功能体系进行优化配置研究,制定“三道防线”支撑的滚动预报、潜在洪水风险靶向预警、“正向—反向—正向”预演、动态优化调度执行预案等流程,明确“四预”业务流程互馈机制,对准确把握防洪“四预”核心功能优化配置和关键技术要求起到指引作用,可有效推动防洪“四预”通用业务软件产品化,为数字孪生水利业务建设探索可复制、可推广的实现路径,具有较强的借鉴与指导意义。 展开更多
关键词 流域防洪 “四预” 业务流程 功能体系 “三道防线” “天空地水工”
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安全风险“三道防线”系统防控模型研究——基于安全管理体系的视角 认领 引用 被引量:8
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作者 江田汉 姜传胜 +7 位作者 高东风 曾明荣 郑丽君 张玉冰 刘志强 郑博艺 郭焘 周福宝 《中国安全生产科学技术》 CAS CSCD 北大核心 2025年第5期28-35,共8页
为建立完善中国特色的安全生产管理体系,以其背后的安全理论模型为研究对象,基于系统思维,在阐述安全管理体系本质的基础上,分析国内外相关理论或模型的研究与实践情况,研究构建大安全大应急框架内的安全风险“三道防线”系统防控模型... 为建立完善中国特色的安全生产管理体系,以其背后的安全理论模型为研究对象,基于系统思维,在阐述安全管理体系本质的基础上,分析国内外相关理论或模型的研究与实践情况,研究构建大安全大应急框架内的安全风险“三道防线”系统防控模型。该模型基于系统理论的事故模型,以损失最小化为目标,以安全风险管控、隐患排查治理、应急处置与救援三道防线为主干,以人员管理和生产管理为安全管理重点,以信息沟通作为系统的重要支撑,是1种新颖的系统防控模型。研究结果表明:该模型适用于我国安全生产管理体系建立、实施、保持和持续改进,可为安全生产管理体系和能力现代化建设提供基础理论支持。 展开更多
关键词 安全 安全风险 安全管理 安全管理体系 系统防控模型 三道防线
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雨水情监测预报“三道防线”耦合贯通建设应用与探讨 认领 引用 被引量:16
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作者 刘志雨 《中国水利》 2025年第10期1-7,共7页
围绕现代化雨水情监测预报体系建设应用,简要总结我国雨水情监测预报“三道防线”建设情况与技术进展,介绍中央、流域、省级层面推进雨水情监测预报“三道防线”耦合贯通建设应用的典型案例。针对当前存在的监测与预报耦合贯通不够、硬... 围绕现代化雨水情监测预报体系建设应用,简要总结我国雨水情监测预报“三道防线”建设情况与技术进展,介绍中央、流域、省级层面推进雨水情监测预报“三道防线”耦合贯通建设应用的典型案例。针对当前存在的监测与预报耦合贯通不够、硬件与软件技术发展不平衡等问题,研究提出雨水情监测预报“三道防线”耦合贯通建设应用中需要把握数据融合与共享、模型耦合与协同、监测与预报贯通、不确定性与风险管理、技术支撑与智能化、预警联动与响应机制等关键点,探索建立由监测感知、模型预报、预警响应、基础支撑技术构成的雨水情监测预报“三道防线”耦合贯通技术体系与“天空地水工”一体化监测预报业务模式,为加快构建现代化雨水情监测预报体系提供决策参考,为推动水利高质量发展、保障我国水安全提供有力的水文支撑。 展开更多
关键词 雨水情监测预报 三道防线 耦合贯通 关键点 技术体系
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基于三道防线协调的交直流混联电网主动频率响应控制策略 认领 引用
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作者 李梓锋 褚洪川 +5 位作者 孙乔 李宏伟 付绍文 陈若尘 赵博群 李卫东 《东北电力大学学报》 2025年第4期53-62,共10页
电力系统遭受功率扰动后,频率响应呈现明显的时空分布特征,不同地区的频率响应非同步现状,决定了互联电力系统的调频能力仍有提升空间。由于电力系统多阶段协调运行方能实现最优,文中以安全经济协调为目标,基于面向电力系统频率稳定的... 电力系统遭受功率扰动后,频率响应呈现明显的时空分布特征,不同地区的频率响应非同步现状,决定了互联电力系统的调频能力仍有提升空间。由于电力系统多阶段协调运行方能实现最优,文中以安全经济协调为目标,基于面向电力系统频率稳定的三道防线,提出多阶段协调的主动频率响应控制策略。在预防控制阶段,通过预购调频容量进行调节能力储备;在紧急控制阶段,通过前馈主动控制利用频率响应时空分布特性提升系统调频能力;在校正控制阶段,通过惩罚项设置避免影响系统安全、触发低频减载。算例分析与仿真验证均表明,文中所提的基于三道防线协调的交直流混联电网主动频率响应控制策略,在安全性方面优于被动频率响应模式,在经济性方面优于单阶段运行控制,总体控制效果提升明显。 展开更多
关键词 电力系统 频率响应 三道防线 协调运行 控制策略
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基于灰犀牛理论的安全生产三道防线内涵解析与体系构建 认领 引用
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作者 佟瑞鹏 王乾 +3 位作者 安宇 赵晶荣 常维纯 苟泽念 《中国安全科学学报》 EI CAS CSCD 北大核心 2025年第9期52-59,共8页
为探析灰犀牛风险在安全生产领域的理论贡献和应用价值,融合灰犀牛理论内涵与外延,开展安全生产三道防线研究的多元视角融合和思维范式突破。遵循概念整合路径分析、情景演化链条推演和三道防线体系构建3部分内容构建安全生产灰犀牛内... 为探析灰犀牛风险在安全生产领域的理论贡献和应用价值,融合灰犀牛理论内涵与外延,开展安全生产三道防线研究的多元视角融合和思维范式突破。遵循概念整合路径分析、情景演化链条推演和三道防线体系构建3部分内容构建安全生产灰犀牛内涵解析与防控体系。结果表明:灰犀牛风险与安全生产危险源、隐患、事故有极为相似的认知解读属性和概念映射关系,安全生产灰犀牛由主观建构和客观实在风险因素共同影响风险评估与管控维度;安全生产事故情景演化链条是由“系统能量—诱发因素—承灾性能”情景构成要素和“累积—波动—突变”风险演化阶段组成;从“认知域—预防域—控制域”防控区域和“防护层—治理层—应急层”层级结构构建安全生产三道防线,为安全生产管理研究提供灰犀牛理论和风险隐喻方法指导。 展开更多
关键词 灰犀牛理论 安全生产 三道防线 内涵解析 防控体系
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基于数字孪生的输变电线路三维数字化仿真系统 认领 引用 被引量:3
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作者 张星炜 王海楠 +3 位作者 孟悦 黄祥 吴媚 朱洁 《自动化技术与应用》 2025年第2期94-99,共6页
针对原有系统无法真实展示工程地理环境的问题,研究基于数字孪生的输变电线路三维数字化系统的设计方法。在硬件设计中,布局输变电线路网络架构,嵌入OPC-UA服务器,绑定传感器节点位置。在软件设计中,建立输变电线路空间数据库,构建数字... 针对原有系统无法真实展示工程地理环境的问题,研究基于数字孪生的输变电线路三维数字化系统的设计方法。在硬件设计中,布局输变电线路网络架构,嵌入OPC-UA服务器,绑定传感器节点位置。在软件设计中,建立输变电线路空间数据库,构建数字孪生三维虚拟模型,完成三维数字化系统的设计。以复杂地区输变电线路建设工程为对象进行实验,实验结果表明:选择多个场景中的位置线段进行距离测量时,两组传统方法对实际距离测量存在误差,生成的地形图像发生形变,而本文系统可完全还原输变电线段距离,具有实际应用效果。 展开更多
关键词 输变电线路 环境特征 数字孪生 三维数字化系统
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基于智能运维的三相电能表自动化检定流水线技术研究 认领 引用 被引量:4
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作者 张悦 刘璐 +2 位作者 刘俐君 刘宝铭 刘洋 《数字通信世界》 2025年第4期58-60,共3页
将物联网、智能化等先进技术应用到电能表检定工作中,能够有效保证检定结果的可靠性,提高设备运维管理效率,保证设备运行的安全性。目前,在三相电能表自动化检定过程中存在着诸多问题,难以保证三相电能表自动化检定流水线技术的有效应... 将物联网、智能化等先进技术应用到电能表检定工作中,能够有效保证检定结果的可靠性,提高设备运维管理效率,保证设备运行的安全性。目前,在三相电能表自动化检定过程中存在着诸多问题,难以保证三相电能表自动化检定流水线技术的有效应用。为此,本文分析了基于智能运维的三相电能表自动化检定流水线技术,提出了加强运维人员专业队伍建设、充分发挥数字化技术的作用、完善流水线基础设施建设等对策,旨在进一步提升电网智能运维水平。 展开更多
关键词 三相电能表 自动化检定系统 流水线 智能运维
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On Significance of Heterotic Group Theory in Hybrid Rice Breeding 认领 引用 被引量:7
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作者 Lu Zuo-mei Xu Bao-qin 《Rice science》 2010年第2期94-98,共5页
Heterotic group theory (HGT) has played a major role in supporting hybrid maize breeding for about 100 years. The basic content and studies of HGT, and its application in rice and maize were summarized in this paper... Heterotic group theory (HGT) has played a major role in supporting hybrid maize breeding for about 100 years. The basic content and studies of HGT, and its application in rice and maize were summarized in this paper. Additionally, difficulties and challenges for hybrid rice breeding in China were analyzed, and necessity and urgency in hybrid rice breeding by using HGT were proposed. 展开更多
关键词 hybrid rice hybrid maize breeding three-line system combining ability heterotic group crossing model
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