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联合注意力和条件GAN的被遮挡人体姿态和体形估计方法

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计算机辅助设计与图形学学报 2024年第1期36卷 142-151页

作者：朱妍汪楷汪粼波方贤勇安徽大学体育军事教学部合肥230601 安徽大学计算机科学与技术学院合肥230601

基于图像的人体姿态和体形估计常常因人体被遮挡而充满挑战.为此,提出一种基于单幅图像的姿态和体形估计方法.首先提出多尺度的注意力模块策略,输出具有丰富上下文信息的多尺度注意力特征,以有效地获得不受遮挡影响的全局的姿态和体形分... 详细信息

基于图像的人体姿态和体形估计常常因人体被遮挡而充满挑战.为此,提出一种基于单幅图像的姿态和体形估计方法.首先提出多尺度的注意力模块策略,输出具有丰富上下文信息的多尺度注意力特征,以有效地获得不受遮挡影响的全局的姿态和体形分布;然后提出基于热图的条件生成对抗网络策略,将由关节热图得到的姿态估计作为约束,实现网格精细调整;最后借助这2个策略得到的姿态和体形估计方法实现全局预测和局部细节求精的结合.在Ubuntu环境下,在3DPW,3DOH50K和Human3.6M公开数据集上的实验结果表明,与SMPLify,GraphCMR和SPIN等方法相比,所提方法在身体部分被遮挡时重建效果更好,并在ACK,AVE和PA-MPJPE等定量评价指标上取得了更好的结果.

关键词：人体体形和姿态估计单幅图像多尺度注意力生成对抗网络

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基于覆盖理论的高速强机动目标协同围捕策略

工程科学学报 2024年第7期46卷 1169-1178页

作者：江涌王林波王蒙一宋勋安鹏飞于江龙中国长峰机电研究院北京100854 北京电子工程总体研究所北京100854 北京遥感设备研究所北京100854 北京航空航天大学人工智能研究院北京100191

为了应对进攻性高超声速飞行器带来的威胁与挑战,基于覆盖理论提出了一种针对高速强机动目标的分布式协同围捕策略.首先,考虑飞行器与目标的机动特性,包括速度关系、最大过载比等参数,引入阿波罗尼奥斯圆的概念对围捕区域进行分析.然后... 详细信息

为了应对进攻性高超声速飞行器带来的威胁与挑战,基于覆盖理论提出了一种针对高速强机动目标的分布式协同围捕策略.首先,考虑飞行器与目标的机动特性,包括速度关系、最大过载比等参数,引入阿波罗尼奥斯圆的概念对围捕区域进行分析.然后,基于重叠角概念提出冗余覆盖策略,根据目标的逃逸边界给出初始飞行器最优数量,设计围捕队形使多飞行器的围捕区域能够对目标逃逸边界完全覆盖,在此基础上考虑多种约束设计围捕高速强机动目标的分布式协同制导律,使多飞行器能够完成所设计的围捕队形,达到目标被飞行器合围后无法逃脱的效果.最后,将上述覆盖策略分别在二维平面和三维空间进行数值仿真,验证了一致性协同制导律能够实现期望的围捕队形,所设计的围捕队形在目标作最大常值机动逃逸以及随机机动两种情况下均能捕获目标,证明了围捕队形和制导律的有效性和优越性.

关键词：覆盖理论协同围捕高速强机动目标阿波罗尼奥斯圆围捕区域

High-throughput sorting of two-color fluorescent-labeled zebrafish embryos

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Journal of Innovative Optical Health Sciences 2023年第5期16卷 107-114页

作者： Hongzhen Tang linbo wang Xiaohu Chen Chong Chen Hui Li Guang Yang Changchun University of Science and Technology Changchun Jilin 130022P.R.China Jiangsu Key Laboratory of Medical Optics Suzhou Institute of Biomedical Engineering and Technology Chinese Academy of Sciences SuzhouJiangsu 215163P.R.China

The zebrafish embryos were widely employed in genetics,development and drug discovery studies as miniatured animal *** of two-color fluorescent embryos is often required in large-scale experiments but it is challenging to manually sort with high ***,we reported a high-throughput sorting system for two-color fluorescent zebraflsh *** embryos can be automatically loaded from a sample pool and sorted based on the average fluorescent *** two-color fluorescent signals were split into two lines and detected by an area array *** system achieves the sorting of 100 embryos in less than 10 min with an accuracy of greater than 95%.

关键词： High-throughput zebrafish embryo two-color sorting automatic.

Synthesis of CuS nanoparticles decorated Ti3C2Tx MXene with enhanced microwave absorption performance

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Progress in Natural Science:Materials International 2020年第3期30卷 343-351页

作者： Guangzhen Cui linbo wang Ling Li Wei Xie Guangxin Gu Key Laboratory of Science and Technology on Electromagnetic Environmental Effects and Electro-optical Engineering The Army Engineering University of PLA College of Pharmacy Chengdu University of TCM The First Scientific Research Institute of Wuxi 4. Academy for Engineering and Technology Fudan University

MXene,a novel two-dimensional (2D) multi-layer material,has drawn unusual interest as the microwave absorbers for electromagnetic energy *** MXene-based heterostructure composites via optimizing structure is an effective strategy to endow MXene materials with high-performance microwave *** study reports the fabrication and investigation of the microwave absorption performance of a sandwich-like CuS/Ti3C2TxMXene composites prepared by loading CuS nanoparticles onto 2D Ti3C2Txvia a solvothermal *** morphology and electromagnetic absorption properties of this composite were investigated and the results demonstrated that the CuS/Ti3C2Txcomposite with a heterolayered architecture displayed superior microwave absorption *** a 35 wt%filler loading in the paraffin matrix,the minimum reflection loss value reached-45.3 dB at a frequency of 7.3 GHz and the effective absorption bandwidth achieved a value as high as 5.2 GHz with a thickness of 2.0 *** enhanced microwave absorption performances can be ascribed to the cooperation of the conductive network,interface polarization,dipole polarization,multiple reflection and ***,the synthesized CuS/Ti3C2TxMXene composites offer an efficient foundation for the design and utilization of other lightweight microwave absorbers.

关键词： CuS Heterolayered architecture MXene Nanoparticles Sandwich

Influence of Steam and Sulfide on High Temperature Selective Catalytic Reduction

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Fluid Dynamics & Materials Processing 2020年第3期16卷 615-621页

作者： Jiyuan Zhang linbo wang Chengqiang Zhang Shuzhan Bai R&D Center Weichai Power Co.Ltd.Weifang261041China School of Energy and Power Engineering Shandong UniversityJinan250061China

The influences of steam and sulfide on the efficiency of NOx reduction using ammonia(NH_(3))over the nanometer-class V-W/Ti catalyst in conditions of high temperature is experimentally investigated using a steady-flow *** results showed that selective catalytic reduction(SCR)is inhibited by H_(2)O at low temperature,but higher NO conversion efficiency is achieved at high temperature since the reaction of NH_(3) oxidized by O_(2) to NOx is inhibited by H_(2)*** activity of SCR is promoted by SO_(2) in the temperature range of 200~500℃,the NO conversion efficiency was improved to 98%from 94%by adding SO_(2).SCR would be improved at 350~500℃ when H_(2)O and SO_(2) exist at the same ***,the positive influence to the NOx conversion was proved in the presence of H_(2)O and SO_(2) as a result of the European Stationary Cycle test.

关键词： High temperature selective catalytic reduction efficiency

Study on sedimentation distribution based on cooperative analysis of geologic-geophysical in less well area: A case study of Suweiyi sandstone in the DB area, Kuqa Depression in Tarim Basin

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Petroleum Research 2020年第4期5卷 339-346页

作者： Huiling Niu Lixia Liang linbo wang Chenchen wang Juan Zhang Exploration and Development Research Intstitute Sinopec Northwest Oifield Company Urumqi 830011Xingfiang China College of Earth Sciences Yangtze University Wuhan430100HubeiChina Departoment of Earth Science and Engineering Imperial College London LondonSW72AZ UK

The Kuqa Depression in Tarim Basin develops fan deltaic,braided river deltaic,and lacustrine sedi-mentation,espeially extensive braided river deltaic sedimentation,in the Cretaceous-Paleogene ***,fine sedimentary pattern of the Kuqa Depression and North Tarim Uplift belt since the Middle Cenozoic still needs to be *** a combination zone of the Kuqa Depression and North Tarim Uplift,the sedimentary characteristics of the DB area in the southern margin of the east of the Kuqa depression have been paid more *** better understand the sedimentary framework in the Kuqa Depression and North Tarim Uplift in the Mesozoic and Cenozoic,through joint geologic-geophysical study,sedime ntation of sandstone at the bottom of the Paleogene Suweiyi Formation in the DB area and its peripheral area is *** facies and sandstone distribution in the area are identified through core observation,component analysis,logging interpretation and seismic *** on seismic facies analysis,sedimentary facies distribution in the area is *** show that sandstone at the bottom of the Paleogene Suweiyi Fommation in the DB area and its peripheral area is developed in shore shallow lacustrine beach-bar *** beach-bar arenaceous sediments are mainly distnibuted in the southern DB area and the shallow lacustrine mudstone is developed in northern DB area,showing obvious north south di ferentiation charactenistics.

关键词： Suweiyi formation Sandstone Seismic inversion Seismic facies Logging facies Sedimentary facies Kuqa depression Tarim basin

基于DE-3D U-Net的斑马鱼后脑血管共聚焦显微图像分割和量化测量

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激光生物学报 2024年第3期33卷 209-216页

作者：郑文虎李辉陈冲王林波中国科学技术大学生命科学与医学部生物医学工程学院合肥230026 中国科学院苏州生物医学工程技术研究所苏州215163

斑马鱼后脑部位的脉络丛控制着大脑和血管之间的物质交换,脉络丛周围的血管异常可引发相关的脑血管疾病。本文首先对斑马鱼后脑部位的主要血管进行了连续成像,使用共聚焦显微镜拍摄正常情况和柱孢藻毒素处理后的斑马鱼胚胎,获得了斑马... 详细信息

斑马鱼后脑部位的脉络丛控制着大脑和血管之间的物质交换,脉络丛周围的血管异常可引发相关的脑血管疾病。本文首先对斑马鱼后脑部位的主要血管进行了连续成像,使用共聚焦显微镜拍摄正常情况和柱孢藻毒素处理后的斑马鱼胚胎,获得了斑马鱼在受精后43~63 h的系列三维图像。然后,进一步开发了图像分割的神经网络DE-3D U-Net用于主要后脑血管的分割。网络分割结果显示,3根主要血管的类别像素准确率分别为86.67%、93.18%和83.74%。最后,绘制了斑马鱼后脑血管发育曲线图。结果表明,3根主要的血管半径在高浓度的柱孢藻毒素处理后出现了18%左右的缩减,中脑静脉夹角出现了30°~50°的缩减。此研究提出了一个可用于斑马鱼后脑血管分割的神经网络模型,得出的数据可为斑马鱼脉络丛发育研究提供基础。

关键词：斑马鱼后脑血管共聚焦显微成像 3D U-Net神经网络柱孢藻毒素

Palaeoclimate of the Paleogene Dongying Formation in Bozhong Sag of Bohai Bay Basin

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Petroleum Research 2021年第4期6卷 368-378页

作者： Juan Zhang Chenchen wang Jingmin wang linbo wang Yunqian Jia Rongrong Hu College of Earth Sciences Yangtze UniversityWuhan430100HubeiChina Laboratory of Reservoir Microstructure Evolution and Digital Characterization Wuhan430100HubeiChina Cooperative Innovation Center of Unconventional Oil and Gas Yangtze UniversityWuhan430100China School of Petroleum Engineering Yangtze UniversityWuhan430100China

It was showed that the sedimentary environment of lacustrine basins is more susceptible to basin size than that of marine basins,leading to frequent changes in sedimentary environment and large differences in sediment supply and *** on the comprehensive analysis of clay minerals,spore pollen,major elements and trace elements,the sedimentary environment of Dongying Formation and its evolution in Bozhong Sag were *** results showed that during the sedimentary period of Dongying Formation,the study area was in a subtropical warm and humid climate as a *** addition,the vertical distribution of spore pollen and algae was divided into four zones and each one represents different sedimentary *** zone I is characterized by a large number of spore pollen and algae,including juglanspollenites verus,ulmipollemites minor,abietineaepollenites and pinuspollenites,taxodiaceaepollenites hiatus,leiosphaeridia and granodiscus,and it indicates a relatively hot and dry climatic;Combination zone II mainly contains juglanspollenites verus,ulmipollemites minor,abietineaepollenites and pinuspollenites,pediastrum and *** with I,the number of spore pollen and algae decreases,but the number of pediastrum increases a lot,which represents warm and humid *** combination zone III is dominated by abietineaepollenites and pinuspollenites and chaetosphaeridium,and the species and quantity decrease *** indicates a relatively hot and humid climate at that *** zone IV contains a small amount of spore pollen and algae,and it means the climate was warm and humid at that *** frequent changes of sedimentary environment in lacustrine basins are influenceded by regional tectonic environment and basin *** S/A and E-T parameters,the paleoclimate in the study area was delineated and 10 sedimentary environment interfaces were identified,which further illustrated the characteristics of frequent fluctuati

关键词： Clastic rocks Spore pollen assemblage zone Sedimentary environment Bozhong sag Lacustrine basin

Corrosion behavior of ferritic ODS steel prepared by adding YH2 nanoparticles in supercritical water at 600 °C

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Progress in Natural Science:Materials International 2018年第4期28卷 505-509页

作者： Zhonglian Bai linbo wang Chenxi wang Wenhua Gao Lefu Zhang Tong Liu Laboratory of Aerospace Materials and Performance (Ministry of Education) School of Materials Science and Engineering Beihang University School of Nuclear Science and Engineering Shanghai Jiao Tong University

The corrosion behavior of the ferritic oxide dispersion strengthened(ODS)steel(14Cr-3Al-2W-0.1Ti)prepared by adding YH2nanoparticles(NPs)was investigated in supercritical water(SCW)at 600°C for 1500 *** mass gain of the ODS steel(215.5 mg/dm~2)was lower than that of SUS430 steel(357.2 mg/dm~2).A dual oxide layer generated on the surface of ODS steel after corrosion in *** outer layer was composed of Fe2O3and Fe3O4,while the inner layer composed of the spinel-type FeCr2O4together with *** generation of Y2Ti2O7NPs in the ODS steel by adding YH2NPs prohibits the formation of Y-Al-O particles and leaves more Al available to form a continuous protective oxide scale to improve the corrosion ***,the Y2Ti2O7NPs act as efficient barriers to suppress the outward diffusion of metal *** novel ODS steel shows potential applications in supercritical water.

关键词： Supercritical water ODS steel Corrosion behavior Microstructure