检索结果-南通市图书馆

基于深度学习和图像识别的变电站虚端子连接校核技术

在线全文

学校读者我要写书评

暂无评论

广东电力 2024年第2期37卷 73-79页

作者：成佳富罗振华廖惠琴汤野孙迪飞刘世丹陈磊广东电网有限责任公司电力调度控制中心广东广州510055 南方电网广东惠州供电局广东惠州516001 武汉凯默电气有限公司湖北武汉430223

针对变电站配置描述(substation configuration description, SCD)校验工作量庞大以及人工校验效率低、准确率低的问题,提出一种基于深度学习和图像识别的虚端子连接智能校核技术。首先利用Tensorflow框架的Faster R-CNN模型,对SCD虚连... 详细信息

针对变电站配置描述(substation configuration description, SCD)校验工作量庞大以及人工校验效率低、准确率低的问题,提出一种基于深度学习和图像识别的虚端子连接智能校核技术。首先利用Tensorflow框架的Faster R-CNN模型,对SCD虚连接图中的保护、测控智能电子设备(intelligent electronic device, IED)进行智能辨识,将端列端识别的Attention-OCR方法和“Advanced EAST+Tesseract OCR”的两阶段识别方法进行对比,选择准确率较高的Attention-OCR端到端识别方法实现SCD虚连接图中的文字、数字识别;然后,利用图像处理技术实现SCD虚连接图连接关系识别,数据整理后得到SCD侧虚连接表。最后,开展SCD侧与Excel侧虚连接表正向与反向2个方向的比对,形成核对报告,筛选出不对应的信息,有效地提高了SCD校验的效率和准确率。

关键词：变电站配置描述深度学习图像识别虚端子表智能校核

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

“矿相学”实验课短视频作业教学效果分析

中国地质教育 2022年第2期31卷 104-107页

作者：高文元黄菲陈家富刘博郭荣荣高荣臻东北大学资源与土木工程学院辽宁沈阳110819 金属矿山岩石力学与安全开采国家级虚拟仿真教学实验中心辽宁沈阳110819

“矿相学”实验课涉及比较复杂的矿相显微镜操作的基本原理和方法,以及较多的矿石矿物鉴定特征,学生往往处于被动接受知识的状态。本文通过设置短视频形式的实验课作业,要求学生录制一段独立口述的实验操作环节或对比两个相似矿石矿物... 详细信息

“矿相学”实验课涉及比较复杂的矿相显微镜操作的基本原理和方法,以及较多的矿石矿物鉴定特征,学生往往处于被动接受知识的状态。本文通过设置短视频形式的实验课作业,要求学生录制一段独立口述的实验操作环节或对比两个相似矿石矿物鉴定特征的短视频,并发布在个人社交平台上。通过课后的问卷调查发现,实验课短视频作业能够引导学生积极参与实验课的课堂实践,提高学生掌握矿相学的观察和描述方法的水平,完成向“以学生学习为中心”的价值取向的转变,同时还兼顾了地学科普和专业宣传的功能。

关键词：矿相学实验课短视频教学效果问卷调查

在线全文

学校读者我要写书评

暂无评论

综合勘察技术在核电厂初可研勘察中的应用

工程技术研究 2024年第11期9卷 90-92页

作者：杨晨赵家福张建章建新姜鹏深圳市工勘岩土集团有限公司广东深圳518026

核电厂初步可行性研究阶段勘察的主要目的是结合候选厂址现有岩土资料,外业采用勘探、工程物探、地质调绘等多种手段,初步查明候选厂址区的岩土工程条件,对厂址区的地质构造特征、场地稳定性、地层岩性分布、核电厂地基适宜性、不良地... 详细信息

核电厂初步可行性研究阶段勘察的主要目的是结合候选厂址现有岩土资料,外业采用勘探、工程物探、地质调绘等多种手段,初步查明候选厂址区的岩土工程条件,对厂址区的地质构造特征、场地稳定性、地层岩性分布、核电厂地基适宜性、不良地质作用、边坡稳定性等方面作出初步评价,为初步可行性研究报告的编制提供依据。文章以广东某核电厂初步可行性研究阶段勘察为例,总结了地调、钻探、物探等综合勘察技术在核电厂初可研勘察中的应用。

关键词：综合勘察技术地质钻探核电厂初步可行性研究

Functional diversification and molecular mechanisms of FLOWERING LOCUS T/TERMINAL FLOWER 1 family genes in horticultural plants

在线全文

学校读者我要写书评

暂无评论

Molecular Horticulture 2022年第1期2卷 266-278页

作者： Shuang Wang Yiman Yang Fadi chen jiafu Jiang State Key Laboratory of Crop Genetics and Germplasm Enhancement Key Laboratory of LandscapingMinistry of Agriculture and Rural AffairsKey Laboratory of Biology of Ornamental Plants in East ChinaNational Forestry and Grassland AdministrationCollege of HorticultureNanjing Agricultural UniversityNanjing 210095China

Flowering is an important process in higher plants and is regulated by a variety of factors,including light,tempera-ture,and *** restriction has a considerable impact on the commodity value and production cost of many horticultural *** Arabidopsis,the FT/TFL1 gene family has been shown to integrate signals from vari-ous flowering pathways and to play a key role in the transition from flower production to seed *** in several plant species of the FT/TFL1 gene family have revealed it harbors functional diversity in the regulation of ***,we review the functional evolution of the FT/TFL1 gene family in horticulture plants and its unique regulatory mechanisms;in addition,the FT/TFL1 family of genes as an important potential breeding target is explored.

关键词： FLOWERING LOCUS T(FT) TERMINAL FLOWER 1(TFL1) Flowering Functional evolution Horticultural plant

90°激光汤姆逊散射测量角向等离子体的温度和密度

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

核聚变与等离子体物理 1982年第2期8卷 99-104页

作者：左鹤年徐耀聪陈家富晏德荣阳彦鑫西南物理研究所

本文描述了90°红宝石激光汤姆逊散射的实验方法,较详细地介绍了多道散射信号的接收、校准,以及电磁干扰的排除。测出了角向3号装置的电子温度和电子密度随时间的变化。对实验结果作了误差分析。

关键词：激光汤姆逊散射测量角角向等离子体电子密度电子浓度

Variation for Resistance to Alternaria tenuissima and Potential Structural Mechanism among Different Cultivars of Chrysanthemum morifolium

在线全文

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2020年第4期89卷 851-859页

作者： Huiyun Li Ye Liu Sumei chen jiafu Jiang Aiping Song Weimin Fang Fadi chen State Key Laboratory of Crop Genetics and Germplasm Enhancement Key Laboratory of LandscapingMinistry of Agriculture and Rural AffairsCollege of HorticultureNanjing Agricultural UniversityNanjing210095China

Black spot disease,caused by the necrotrophic fungus Alternaria tenuissima(Fr.)Wiltsh(***),is considered a highly destructive disease of Chrysanthemum(Chrysanthemum morifolium Ramat.).A set of 17 accessions of commercial chrysanthemum cultivars were evaluated for resistance to *** by seedling artificial *** was found that the reaction of the accessions to artificial inoculation ranged from resistant to highly *** varieties of chrysanthemum(‘Zhongshan Taogui’,‘Jinba’,‘Zhongshan Jinguan’,‘Jinling Wanhuang’and‘Jinling Yangguang’)were resistant;two varieties of chrysanthemum(‘Zhongshan Xinggui’and‘Zhongshan Jinkui’)were moderately resistant;and others were susceptible to various degrees,four varieties of chrysanthemum(‘Zhongshan Zihe’,‘Zhongshan Jiuhong’,‘Zaoyihong’and‘Jinling Jiaohuang’)were highly susceptible,*** leaf morphological features of two resistant and two highly susceptible cultivars were further *** density,length,height,gland size and stomata density were found to be associated with plant passive *** varieties that were identified in present study will be promising germplasm for exploitation of breeding programmes aimed at developing ***-resistant cultivars and increasing genetic diversity.

关键词： Alternaria tenuissima commercial chrysanthemum cultivars disease resistance leaf morphology

Optical dating of the Jingshuiwan Paleolithic site of Three Gorges, China

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2006年第11期51卷 1334-1342页

作者： PEI Shuwen ZHANG jiafu GAO Xing ZHOU Liping FENG Xingwu chen Fuyou Institute of Vertebrate and Paleoanthropology Chinese Academy of Sciences Beijing 100044 China College of Environmental Sciences MOE Key Laboratory for Earth Surface Processes Peking University Beijing 100871 China

The Jingshuiwan Paleolithic site occu- pies the second terrace on the right bank of the Yangtze River. The lithic assemblage is characterized by choppers and scrapers made on pebbles and large flakes——the typical lithic industry of South China. Deposits of the site are mainly composed of fluvial sediments. Quartz grains extracted from these fluvial sediments from which the artifacts were un- covered were dated using the optically stimulated luminescence/single-aliquot regenerative-dose tech- nique. The dating results show that ancient human activities at this site took place in the early Upper Pleistocene (ca. 70 ka). The successful age analysis of the Jingshuiwan site is considered as a major break- through in chronological analysis of Paleolithic open site in the Three Gorges region and even in South China. The dates obtained help to establish a more complete chronological framework of the Paleolithic cultural sequence in the region, and bear significant implica- tions in studying modern human origins in China.

关键词：旧石器时代光学定年河成阶地人类起源

The 7^(th) National Gastric Cancer Academic Conference:focus on translational research in gastric cancer

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Cancer Research 2012年第4期24卷 408-414页

作者： Aiwen Wu jiafu Ji Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education) Department of Gastrointestinal SurgeryPeking University Cancer Hospital & Institute

Introduction Gastric cancer is a heterogeneous disease with large variations across geographical regions （1）. Although the global incidence of gastric cancer is declining, it remains highly prevalent in Asia as compared to the West （2,3）. China is one of the countries with the highest incidence of gastric cancer, and accounts for over 40% of all new gastric cancer cases in the world （4,5）. Gastric cancer is the third leading cause of cancer mortality in China （6,7）. The 7th National Gastric Cancer Academic Conference （NGCAC） was held in Beijing from June 22 to June 24 with approximately 1,200 attendees, which was organized by Gastric Cancer Committee, Chinese Anti-Cancer Association （CACA）（Figure I）. The theme of this conference was specification, integration, and transformation. Dr. jiafu Ji, MD, FACS, the chairman of the conference, the president of Gastric Cancer Committee, CACA, pointed out that the conference was aimed at standardizing the diagnosis and treatment of gastric cancer, integrating the information platform, and transferring current research achievements （Figure 1）. It has been about thirteen years since last National gastric cancer academic conference, which was held in Nanjing in 1999. In this conference, nine pioneer experts （Drs Yan-Zhen Lin, Ji-Fu Wang, Guang-Wei Xu, Jun-Qing chen, Wen-Fan Zhang, Yin-Chang Zhang, Mao-Lin Jin, Xiang-Fu Zhang, and Xi-Shan Hao） were awarded Lifetime Achievement Award by Gastric Cancer Committee, CACA. There were ten sessions and more than two hundred papers or abstracts submitted, the proceeding was published in Translational Gastrointestinal Cancer Vol 1, supplement 1, June 2 012.

关键词： National Gastric Cancer Academic Conference The 7 th

Small-scale alpine topography at low latitudes and high altitudes:refuge areas of the genus Chrysanthemum and its allies

在线全文

学校读者我要写书评

暂无评论

Horticulture Research 2020年第1期7卷 503-514页

作者： Xi chen Haibin Wang Xiaodong Yang jiafu Jiang Guopeng Ren Zijuan Wang Xiaodong Dong Fadi chen State Key Laboratory of Crop Genetics and Germplasm Enhancement Key Laboratory of LandscapingMinistry of Agriculture and Rural AffairsCollege of HorticultureNanjing Agricultural University210095 NanjingChina College of Agriculture and Biological Sciences Dali University671003 DaliChina Institute of Eastern-Himalaya Biodiversity Research Dali University671003 DaliChina

Cultivated chrysanthemum(Chrysanthemum morifolium Ramat.)is an economically important ornamental plant species grown ***,the origin of the genus Chrysanthemum remains *** study was conducted in the Hengduan Mountains,Yunnan *** took advantage of a special geographic region where the southernmost species of Ajania and the highest altitude population of Chrysanthemum indicum coexist to investigate their evolutionary *** analysis of 9 populations of 5 species that came from 3 genera was carried out based on morphological traits and SRAP ***,topographical and ecological analyses and surveys of the vegetation communities in the plots were carried out for correlation analysis,and past data were used to reconstruct the ancient topography and vegetation to estimate the migration path and divergence *** found that Chrysanthemum and Ajania were closely related based on the smooth transition states among marginal female florets and their common pollination *** genetic relationship between Phaeostigma and Chrysanthemum was relatively distant,and Ajania was between *** light intensity and relatively humid habitats may be driving the elongation and evolution of marginal female *** found that Chrysanthemum and related genera were largely restricted to stony topographies at an altitude of~3000 *** in specialized alpine coniferous(Pinus)and broadleaved(Quercus)mixed forest marginal *** stony topographies have become ecological islands of refuge for these species in the current interglacial *** Hengduan Mountains play a key role in the evolution,divergence,and survival of Chrysanthemum and its allies.

关键词： habitat altitude topography