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KGTLIR:An Air Target Intention Recognition Model Based on Knowledge Graph and Deep Learning

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Computers, Materials & Continua 2024年第7期80卷 1251-1275页

作者： Bo cao Qinghua xing Longyue Li Huaixi xing Zhanfu Song Graduate School Air Force Engineering UniversityXi’an710051China Air Defense and Antimissile School Air Force Engineering UniversityXi’an710051China

As a core part of battlefield situational awareness,air target intention recognition plays an important role in modern air *** at the problems of insufficient feature extraction and misclassification in intention recognition,this paper designs an air target intention recognition method(KGTLIR)based on Knowledge Graph and Deep ***,the intention recognition model based on Deep Learning is constructed to mine the temporal relationship of intention features using dilated causal convolution and the spatial relationship of intention features using a graph attention ***,the accuracy,recall,and F1-score after iteration are introduced to dynamically adjust the sample weights to reduce the probability of *** that,an intention recognition model based on Knowledge Graph is constructed to predict the probability of the occurrence of different intentions of the ***,the results of the two models are fused by evidence theory to obtain the target’s operational *** show that the intention recognition accuracy of the KGTLIRmodel can reach 98.48%,which is not only better than most of the air target intention recognition methods,but also demonstrates better interpretability and trustworthiness.

关键词： Dilated causal convolution graph attention mechanism intention recognition air targets knowledge graph

Two novel phase transition materials based on 1-isopropyl-1,4-diazabicyclo[2.2.2]octan-1-ium

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Chinese Chemical Letters 2017年第2期28卷 400-406页

作者： Li-Zhuang Chen xing-xing cao School of Biology and Chemical Engineering Jiangsu University of Science and Technology Zhenjiang 212003 China

Two novel phase transition materials,[C9H20N2][Na（BF4）3]（1） and[C9H20N2][（PF6）2]（2）,were synthesized based on 1-isopropyl-1,4-diazabicyclo[2.2.2]octan-1-ium with sodium tetrafluoroborate and hexafluorophosphoric acid,*** scanning calorimetry measurements detected that 1 and 2 underwent reversible phase transitions,which were confirmed by dielectric *** crystal X-ray diffraction data suggested that compound 1 changed from a high temperature phase with a space group of P6_3 to a low temperature one with a space group of P21/c,and that compound 2transformed from the space group of Pbca at room temperature to P21/c at low *** of hydrogen bonds and distortion of l,4-diazabicyclo[2.2.2]octane rings may drive the transitions.

关键词： X-ray diffraction Phase transition Dielectric Differential scanning calorimetry

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电锅炉参与下火电机组甩负荷动态特性研究

节能技术 2024年第2期42卷 169-173页

作者：王行豆中州姚莹莹曹兴李德鑫国网吉林省电力有限公司电力科学研究院吉林长春132000

我国正在加速清洁能源转型以实现“双碳目标”,然而新能源的不断接入使电力系统更加波动和难以稳定,尤其在寒冷供暖地区,电力系统任务更为艰巨。为了解决电力中断问题,火电机组的甩负荷控制技术变得迫切。目前的研究主要集中在改进火电... 详细信息

我国正在加速清洁能源转型以实现“双碳目标”,然而新能源的不断接入使电力系统更加波动和难以稳定,尤其在寒冷供暖地区,电力系统任务更为艰巨。为了解决电力中断问题,火电机组的甩负荷控制技术变得迫切。目前的研究主要集中在改进火电机组运行和蓄热电锅炉的经济性和环保性,但电锅炉的热力特性尚未深入研究。本文建立了电锅炉的功率简化模型,通过仿真模拟研究了电锅炉参与火电机组甩负荷调节的动态特性,旨在为火电机组的灵活性改造提供支持,以提高电力系统的稳定性。

关键词：电锅炉火电机组甩负荷动态响应

基于专利共类的海洋溢油污染防治关键核心技术主题识别

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环境生态学 2024年第4期6卷 65-70页

作者：王新新钱国栋袁宇翔赵兴刘金璐吴亮曹兴涛周绪申中海油能源发展股份有限公司安全环保分公司安全环保工程技术研究院天津300457 中海石油环保服务(天津)有限公司天津300457 天津市海洋石油开发污染防治技术重点实验室天津300457 海油总节能减排监测中心有限公司天津300457 生态环境部海河流域北海海域生态环境监督管理局生态环境监测与科学研究中心天津300061

以国家知识产权局专利检索系统和德温特专利数据库中的溢油污染防治领域专利为数据源,首先通过基于IPC分类信息的技术共类方法识别热点技术主题,其次通过技术相似度和技术影响力的组合分析识别其中的核心和潜在核心技术主题,最后通过结... 详细信息

以国家知识产权局专利检索系统和德温特专利数据库中的溢油污染防治领域专利为数据源,首先通过基于IPC分类信息的技术共类方法识别热点技术主题,其次通过技术相似度和技术影响力的组合分析识别其中的核心和潜在核心技术主题,最后通过结构洞计算排序进一步分析识别其中的关键核心技术主题。结果表明,海洋溢油污染防治领域的关键核心技术主题主要集中在油水分离、添加药剂、吸附处理和微生物降解等方面,为该领域科技未来高质量发展提供了有益参考。

关键词：热点主题结构洞专利分析溢油

Modeling the energetic electron fluxes in the inner radiation belt based on a drift-source model

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Earth and Planetary Physics 2023年第1期7卷 100-108页

作者： Zheng Xiang BinBin Ni YangXiZi Liu XuDong Gu Song Fu Wei Xu xing cao Xin Ma DeYu Guo JunHu Dong JingLe Hu Department of Space Physics School of Electronic InformationWuhan UniversityWuhan 430072China

The Macao Science Satellite-1(MSS-1),designed by the Macao University of Science and Technology and the National Space Science Center(NSSC)of China,is equipped to detect the fine structure of the magnetic field over the South Atlantic Anomaly(SAA)region,monitoring geomagnetic field variations,and obtaining the energetic electron spectrum distributions in the Earth’s inner radiation *** this study,we simulate the distributions of trapped,quasi-trapped,and untrapped electrons along the orbit of MSS-1 based on a drift-source *** simulation results show that the particle detector with 90°looking direction can observe trapped electrons in the SAA region,untrapped electrons in the regions conjugated with the SAA region at the north hemisphere,and quasitrapped electrons in all other *** contrast,the detectors with<60°looking directions can measure only untrapped ***,quasi-trapped electron fluxes accumulate along the drift trajectory and are due primarily to CRAND,until reaching the SAA region where quasi-trapped electrons are all lost into the atmosphere.

关键词： Earth’s inner belt drift-source model quasi-trapped electron CRAND

Prediction of bedload transport inside vegetation canopies with natural morphology

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Journal of Hydrodynamics 2024年第3期36卷 556-569页

作者： Li He Yu-qi Shan Chao Liu Hui cao xing-nian Liu Yakun Guo State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan UniversityChengdu610065China Institute for Disaster Management and Reconstruction Sichuan UniversityChengdu610065China China Yangtze Power Co. Ltd.Yichang443002China Hubei Key Laboratory of Intelligent Yangtze and Hydroelectric Science Yichang443002China Faculty of Engineering and Informatics University of BradfordBradfordUK

Due to vegetation drag and vegetation-generated turbulence,bedload transport in vegetated channels is more complicated than that in nonvegetated *** is challenging to obtain accurate predictions of bedload transport in vegetated *** studies generally used rigid circular cylinders to simulate vegetation,and the impact of plant morphology on bedload transport was typically ignored;these methods deviate from natural scenarios,resulting in prediction errors in transport rates of more than an order of *** study measured bedload transport rates inside ***,*** and *** canopies and in arrays of rigid cylinders for *** impact of plant morphology on bedload transport in vegetated channels was *** the canopies of natural morphology,the primary factor driving bedload transport is the near-bed turbulent kinetic energy(TKE),which consists of both bed-generated and vegetation-generated turbulence.A method was proposed to predict the near-bed TKE inside canopies with natural *** the same solid volume fraction of plants,the transport rate inside canopies with a natural morphology is greater than or equal to that within an array of rigid cylinders,depending on the plant *** finding indicates that plant morphology has a significant impact on transport rates in vegetated regions and cannot be ignored,which is typical in *** classic bedload transport equations(the Meyer-Peter-Müller,Einstein,Engelund and Dou equations),which are suitable for bare channels(no vegetation),were modified in terms of the near-bed *** predicted near-bed TKE was inserted into these four equations to predict the transport rate in canopies with natural morphology.A comparison of the predictions indicated that the Meyer-Peter-Müller equation had the highest accuracy in predicting the transport rate in vegetated landscapes.

关键词： Vegetated landscapes turbulent kinetic energy(TKE) bedload transport plant morphology predictive methods

卡洛芬注射液辅助治疗牛细菌性呼吸疾病的疗效研究

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中国兽药杂志 2024年第6期58卷 47-57页

作者：刘静王玉欣宋婷婷耿智霞贾兴郭李珉刘欣魏占勇曹兴元河北远征药业有限公司石家庄050041 河北省兽药技术创新中心石家庄050041 中国农业大学北京100083

为评价卡洛芬注射液与泰拉霉素注射液联用治疗牛呼吸道疾病(bovine respiratory disease,BRD)的效果,并确定合理的给药剂量,试验选择64头患呼吸道疾病的牛,随机分为A、B两组,每组32头,其中A组皮下注射给予泰拉霉素注射液(推荐剂量2.5 mg... 详细信息

为评价卡洛芬注射液与泰拉霉素注射液联用治疗牛呼吸道疾病(bovine respiratory disease,BRD)的效果,并确定合理的给药剂量,试验选择64头患呼吸道疾病的牛,随机分为A、B两组,每组32头,其中A组皮下注射给予泰拉霉素注射液(推荐剂量2.5 mg/kg·bw),同时肌内注射给予卡洛芬注射液(II期临床试验确认剂量1.4 mg/kg·bw);B组只皮下注射给予泰拉霉素注射液(推荐剂量2.5 mg/kg·bw)。所有试验牛各种药均只给予1次。试验期间观察记录各组牛的临床症状,并对其进行评分;通过对各试验牛的炎症因子、致病菌、特定病原抗原/抗体的检测,评价卡洛芬注射液对牛呼吸道疾病的辅助治疗效果。试验结果显示,相比于单独使用泰拉霉素注射液,卡洛芬注射液与泰拉霉素注射液联用治疗BRD可以在更短时间内消除牛体内病原菌感染带来的炎症反应;泰拉霉素注射液单独使用或与卡洛芬注射液联用治疗BRD,给药3 d病牛的血清PCT浓度均明显下降(P<0.05),但两药联用的下降速度更加显著(P<0.05)。结果表明,临床上推荐卡洛芬注射液与泰拉霉素注射液联用,皮下注射,一次量为1.4 mg/kg·bw,可有效辅助治疗牛呼吸道疾病。

关键词：卡洛芬牛呼吸道疾病临床疗效

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卡洛芬注射液对靶动物奶牛安全性试验研究

中国兽药杂志 2024年第4期58卷 76-84页

作者：宋婷婷任丽花刘静耿智霞贾兴郭李珉刘欣魏占勇曹兴元河北远征药业有限公司石家庄050041 河北省兽药技术创新中心石家庄050041 中国农业大学北京100083

为研究卡洛芬注射液对靶动物奶牛的安全性,将20头健康奶牛随机分为4组,每组5头,各组试验奶牛分别按0、1倍推荐剂量(1.4 mg/kg B.W.)、3倍推荐剂量(4.2 mg/kg B.W.)、5倍推荐剂量(7.0 mg/kg B.W.)单剂量皮下注射卡洛芬注射液,连续给药3 ... 详细信息

为研究卡洛芬注射液对靶动物奶牛的安全性,将20头健康奶牛随机分为4组,每组5头,各组试验奶牛分别按0、1倍推荐剂量(1.4 mg/kg B.W.)、3倍推荐剂量(4.2 mg/kg B.W.)、5倍推荐剂量(7.0 mg/kg B.W.)单剂量皮下注射卡洛芬注射液,连续给药3 d。试验期间观察记录各组奶牛的饮食、精神、粪便情况及试验前后的体重变化,测定给药前、给药后第1天及给药后第3天各组奶牛的血液生理生化指标,同时在给药后第3 d进行剖检,测定脏器指数,观察病理及组织学变化。结果显示,卡洛芬注射液各剂量组奶牛的临床体征、血液生理生化指标、剖检及组织显微结构等均未见明显异常,未出现中毒症状及死亡。与对照组相比,3倍剂量组和5倍剂量组血液生理指标中血小板平均宽度差异显著(P<0.05),5倍剂量组血液生化指标白蛋白数量明显增加(P<0􀆰05),但所有指标均在正常范围内波动。结果表明,卡洛芬注射液在临床上推荐以1.4 mg/kg B.W.给药对靶动物奶牛是安全的。

关键词：卡洛芬注射液奶牛安全性

Biomimetic porous silicon oxycarbide ceramics with improved specific strength and efficient thermal insulation

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Journal of Materials Science & Technology 2024年第1期168卷 185-193页

作者： Zhuoqing Zhang Jinghan Li Lei cao Yu Shi Huajie Yang Rui Yang Fan Xie xing Zhang Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China School of Materials Science and Engineering Shenyang Ligong UniversityShenyang 110159China Shenyang Aircraft Design and Research Institute Shenyang 110035China

Considering the challenge of aerodynamic heating,the development of high-performance insulating ce-ramic materials with lightweight and low thermal conductivity is crucially important for aerospace vehi-cles to achieve flight at high speed for a long *** this work,macro-porous silicon oxycarbide(SiOC)ceramics with directional pores(DP-SiOC)(mean pore size of 88.1μm)were prepared using polysiloxane precursors via freeze casting and photocrosslinking,followed by *** DP-SiOC samples were lightweight(density∼0.135 g cm^(-3))with a porosity of 90.4%,which showed good shapability through the molding of polysiloxane *** DP-SiOC samples also exhibited an ultra-low thermal con-ductivity of 0.048 W(m K)^(-1)at room temperature,which can also withstand heat treatment at 1200°C for 1 *** addition,scaffolds with triply periodic minimal surfaces(TPMS)were fabricated using digital light processing(DLP)printing,which was further filled with polysiloxane precursors for increasing the strength of *** TPMS scaffolds filled with macro-porous SiOC ceramics(TPMS-DP-SiOC)showed good integration between TPMS and macro-pore structures,which had a porosity∼75%and high specific strength of 9.73×10^(3)N m kg^(-1).The thermal conductivity of TPMS-DP-SiOC samples was 0.255 W(m K)^(-1)at room *** biomimetic TPMS-DP-SiOC ceramics developed in this study are likely used for thermal protection systems.

关键词： Thermal insulation Light weight Macro-porous ceramics SiOC