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基于自洽聚类分析的2D C/SiC压缩性能快速预报

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复合材料学报 2024年第8期41卷 4386-4397页

作者：戴新航许承海王琨杰高博哈尔滨工业大学特种环境复合材料技术国家级重点实验室

本文利用自洽聚类分析(Self-consistent clustering analysis,SCA)方法研究了2D C/SiC在单轴压缩载荷下的渐进损伤行为，SCA方法通过应变集中张量对网格单元进行聚类，在不显著降低计算精度的前提下，大幅度降低了模型的自由度，使模型... 详细信息

本文利用自洽聚类分析(Self-consistent clustering analysis,SCA)方法研究了2D C/SiC在单轴压缩载荷下的渐进损伤行为，SCA方法通过应变集中张量对网格单元进行聚类，在不显著降低计算精度的前提下，大幅度降低了模型的自由度，使模型的计算效率得以提高。整个方法由离线和在线两个阶段组成：离线阶段，利用k-means算法对高保真度的复合材料单胞进行分解、聚类并计算不同聚类间的相互作用张量，最终生成降阶模型；在线阶段，基于降阶模型求解离散的Lippmann-Schwinger方程组获取力学响应。将SCA方法应用于2D C/SiC压缩强度的预报，当聚类总数量为64时，与试验相比，压缩强度求解的计算精度与传统有限元相比降低了1%，但整体计算效率提升了34倍。当不考虑离线阶段花费的聚类时间，即事先已知材料的细观构型对其力学行为进行求解时，其一次在线计算的时间仅为6 s，计算效率比传统有限元提升了104倍，在结构性能快速设计、结构状态快速预报等领域，有着广阔的应用前景。

关键词： 2D C/SiC 自洽聚类分析渐进损伤压缩强度细观模型

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基于多模态特征交互的RGB-D显著性目标检测

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计算机工程与应用 2024年第2期60卷 211-220页

作者：高悦戴蒙张晴上海应用技术大学计算机科学与信息工程学院上海201418

现有的大多数RGB-D显著性目标检测方法利用深度图来提高检测效果,而忽视了其质量的影响。低质量的深度图会对最终显著目标预测结果造成污染,影响显著性检测的性能。为了消除低质量深度图带来的干扰,并准确突出RGB图像中的显著目标,提出... 详细信息

现有的大多数RGB-D显著性目标检测方法利用深度图来提高检测效果,而忽视了其质量的影响。低质量的深度图会对最终显著目标预测结果造成污染,影响显著性检测的性能。为了消除低质量深度图带来的干扰,并准确突出RGB图像中的显著目标,提出了一个用于多模态特征交互的RGB-D显著性目标检测模型。在编码阶段,设计了一个特征交互模块,其包含三个子模块:用于增强特征表述能力的全局特征采集子模块、用于过滤低质量深度信息的深度特征精炼子模块和用于实现特征融合的多模态特征交互子模块。在解码阶段,逐层融合经过特征交互后的多模态特征,实现多层次特征融合。通过在五个基准数据集上与十二种先进方法进行的综合实验表明,该模型在NLPR、SIP和NJU2K数据集上的指标上均优于其他对比方法,其中在NJU2K数据集上,该模型的性能比第二名在平均F值上提升了0.008,加权F值上提升了0.014,E-measure上提升了0.007,表现出了较好的检测效果。

关键词： RGB-D显著性检测多模态特征特征交互特征融合

带负载均衡的混合算法求解分布式异构作业车间调度问题

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控制理论与应用 2024年第6期41卷 977-989页

作者：方子丞李新宇高亮华中科技大学数字制造装备与技术国家重点实验室湖北武汉430074

针对以最小化最大完工时间为目标的分布式异构作业车间调度问题(DHJSP),本文提出了一种新的混合遗传禁忌搜索算法.首先,综合考虑工厂的工件总负载与最大机器负载,提出了一种新的工厂负载表达方式.其次,针对DHJSP总工序数不定的特性,提... 详细信息

针对以最小化最大完工时间为目标的分布式异构作业车间调度问题(DHJSP),本文提出了一种新的混合遗传禁忌搜索算法.首先,综合考虑工厂的工件总负载与最大机器负载,提出了一种新的工厂负载表达方式.其次,针对DHJSP总工序数不定的特性,提出以最小化最大工厂负载为目标快速确定初始工件分配方案,并验证了方法的高效性.然后,新设计了两种考虑负载均衡的单工件转移邻域结构,根据工序调度的结果对工件分配方案进行局部搜索.最后,因DHJSP缺少标准算例和相关算法,在分布式同构作业车间调度问题(DJSP)上与现有算法进行对比,所提算法在TA算例的480个问题上更新了420个问题的最优解,其余60个问题取得了同等最优解.在随机生成的3个不同规模的异构算例中,所提算法也均取得了较好解,验证了所提方法的优越性.

关键词：作业车间调度分布式异构工厂负载均衡混合算法最大完工时间

维普期刊数据库博看期刊

技术创新、空间溢出与城市高质量发展——来自中国285个城市的证据

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河北学刊 2024年第4期44卷 150-159页

作者：高波王紫绮南京大学长江三角洲经济社会发展研究中心江苏省社会科学院财贸研究所

当前,城市是中国经济高质量发展的核心区域,科技创新是高质量发展的主引擎。技术创新对城市经济增长质量有显著正向影响,但在不同城市间却表现出显著异质性。相较于东部地区,中部地区的经济增长质量效应更强,而西部地区的技术创新则抑... 详细信息

当前,城市是中国经济高质量发展的核心区域,科技创新是高质量发展的主引擎。技术创新对城市经济增长质量有显著正向影响,但在不同城市间却表现出显著异质性。相较于东部地区,中部地区的经济增长质量效应更强,而西部地区的技术创新则抑制了城市经济的高质量发展,沿海城市从技术创新中受益更多,城市群的发展加强了技术创新对经济增长质量的正向影响。另外,城市经济活动的地理相关性使得技术创新产生了空间溢出效应,并通过技术扩散等方式促进邻近城市经济的高质量发展。所有这些对于理解和指导中国城市经济高质量发展策略都具有重要意义,不仅揭示了技术创新在促进区域经济发展中的关键作用,还为政策制定者针对不同区域和城市类型制定差异化创新政策提供了参考依据。

关键词：技术创新城市区位交通条件空间溢出全要素生产率

Leaf Morphology Genes SRL1 and RENL1 Co-Regulate Cellulose Synthesis and Affect Rice Drought Tolerance

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Rice science 2024年第1期31卷 103-117,I0020-I0022页

作者： LIU Dan ZHAO Huibo WANG zi’an XU Jing LIU Yiting WANG Jiajia CHEN Minmin LIU Xiong ZHANG Zhihai CEN Jiangsu ZHU Li HU Jiang REN Deyong gao Zhenyu DONG Guojun ZHANG Qiang SHEN Lan LI Qing QIAN Qian HU Songping ZHANG Guangheng State Key Laboratory of Rice Biology and Breeding China National Rice Research InstituteHangzhou 310006China Research Center of Plant Functional Genes and Tissue Culture Technology College of Bioscience and BioengineeringJiangxi Agricultural UniversityNanchang 330045China Qian Qian Academician Workstation National Nanfan Research Institute(Sanya)Chinese Academy of Agricultural SciencesSanya 572024China

The morphological development of rice(Oryza sativa L.)leaves is closely related to plant architecture,physiological activities,and ***,it is unclear whether there is a co-regulatory relationship between the morphological development of leaves and adaptation to drought *** this study,a drought-sensitive,roll-enhanced,and narrow-leaf mutant(renl1)was induced from a semi-rolled leaf mutant(srl1)by ethyl methane sulfonate(EMS),which was obtained from Nipponbare(NPB)through ***-based cloning and functional validation showed that RENL1 encodes a cellulose synthase,allelic to NRL1/*** RENL1 mutation resulted in reduced vascular bundles,vesicular cells,cellulose,and hemicellulose contents in cell walls,diminishing the water-holding capacity of *** addition,the root system of the renl1 mutant was poorly developed and its ability to scavenge reactive oxygen species(ROS)was decreased,leading to an increase in ROS after drought ***,genetic results showed that RENL1 and SRL1 synergistically regulated cell wall *** results revealed a theoretical basis for further elucidating the molecular regulation mechanism of cellulose on rice drought tolerance,and provided a new genetic resource for enhancing the synergistic regulation network of plant type and stress resistance,thereby realizing simultaneous improvement of multiple traits in rice.

关键词： cellulose cell wall drought tolerance leaf morphology rice

Ferroptosis:A therapeutic opportunity of inflammatory bowel disease

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Chinese Medical Journal 2024年第7期137卷 874-876页

作者： Yulin Ye Limin Liu Yang Jing Shuangzhe Yao Mo Yang Xin dai Meiyu Piao Xin Xu Zelin Feng Xiaoli Wang Yifei Liu Junming Miao Xingjie gao Qingxiang Yu Xiaocang Cao Department of Gastroenterology and Hepatology Tianjin Medical University General HospitalTianjin Medical UniversityTianjin 300070China Department of Biochemistry and Molecular Biology School of Basic Medical ScienceTianjin Medical UniversityTianjin 300070China

To the Editor:Even to this day,the etiology and pathogenesis of inammatory bowel disease(IBD)are still *** signicant progress in IBD treatment in recent years,some patients remain insensitive or non-responsive towards existing ***,further exploring IBD pathogenesis to develop novel therapeutic drugs or drug combinations is quite *** studies have demonstrated the therapeutic potential of regulating cell death in *** ferroptosis,a novel form of cell death,is also involved in the pathological process of IBD.

关键词： drugs death treatment

Perspectives of genetic management strategy for inherited cardiovascular diseases in China

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Chinese Medical Journal 2024年第8期137卷 959-961页

作者： Yaoyao Zhang Yanjiang Zheng Mengyuan dai Kaiyu Zhou Lijun Fu Yuxuan Guo Yihua He Fen Li Rui gao Donghui Zhang Xujie Liu Jie Tian Yimin Hua Yifei Li Lang Qin Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE West China Second University HospitalSichuan UniversityChengduSichuan 610041China Department of Department of Obstetrics and Gynecology West China Second University HospitalSichuan UniversityChengduSichuan 610041China Department of Pediatrics West China Second University HospitalSichuan UniversityChengduSichuan 610041China Department of Cardiology Shanghai Children’s Medical CenterSchool of MedicineShanghai Jiao Tong UniversityShanghai 200025China Peking University Health Science Center School of Basic Medical SciencesThe Institute of Cardiovascular SciencesKey Laboratory of Molecular Cardiovascular Science of Ministry of EducationBeijing 100191China Department of Ultrasound Beijing Anzhen Hospital affiliated to Capital Medical UniversityBeijing 100029China State Key Laboratory of Biocatalysis and Enzyme Engineering School of Life ScienceHubei UniversityWuhanHubei 430062China Shenzhen Key Laboratory of Cardiovascular Disease Fuwai Hospital Chinese Academy of Medical SciencesShenzhenGuangdong 518052China Department of Cardiology Ministry of Education Key Laboratory of Child Development and DisordersNational Clinical Research Center for Child Health and Disorders(Chongqing)China International Science and Technology Cooperation Base of Child Development and Critical DisordersChildren’s Hospital of Chongqing Medical UniversityChongqing 400014China

Inherited cardiovascular diseases(CVDs)threaten human health and pose an enormous economic burden *** alteration is a major risk factor for many *** disorders are usually controlled by a pair of alleles,affecting offspring according to the Mendelian principle,regardless of isolated primary damage or secondary injury from other syndromes or *** date,there are hundreds of inherited *** advances in nextgeneration sequencing(NGS)technologies,rapid and accurate molecular diagnosis of patients with inherited CVDs is clinically ***,great improvements have been made in recent years,and targeted therapy and assist devices have been used in clinical *** there is still no totally efficient strategy for dealing with inherited ***.

关键词： diagnosis hundreds dealing

中国制造业高质量发展水平测度及时空特征研究

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软科学 2024年第2期38卷 27-34页

作者：方梓旭戴志敏南昌大学经济管理学院南昌330036

采用熵权法测度2015—2020年中国30个省份制造业高质量发展水平,并采用泰尔指数和莫兰指数分析区域差异和空间集聚特征。研究发现:(1)整体上看,制造业高质量发展呈长期向好态势,但发展水平依旧不高;分维度来看,增长规模和产品质量处于... 详细信息

采用熵权法测度2015—2020年中国30个省份制造业高质量发展水平,并采用泰尔指数和莫兰指数分析区域差异和空间集聚特征。研究发现:(1)整体上看,制造业高质量发展呈长期向好态势,但发展水平依旧不高;分维度来看,增长规模和产品质量处于较低水平,且呈波动下降趋势,产业结构优化升级、两化融合、创新驱动、开放发展呈不断上升态势,而绿色发展则呈波动上升趋势;从区域分析来看,东部制造业高质量发展水平呈稳步向上态势,中部总体呈不断上升状态,西部呈上升态势,但增速较慢,东北则出现停滞。(2)区域间差距在不断扩大,直接原因是地区内差异的不断增加,间接原因则是区域划分方式不同和产业转移。(3)各省市区制造业高质量发展水平呈现显著的空间正相关性,但其空间集聚性在不断减弱,未来中西部地区需充分挖掘资源禀赋优势,有序承接产业转移,东部地区则需进一步强化对外协同作用,引导内陆省份有序发展。

关键词：制造业高质量发展测度时空特征

Diagnostic efficacy of virtual organ computer-assisted analysis in measuring the volume ratio of subchorionic hematoma with serum progesterone

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World Journal of Clinical Cases 2024年第17期12卷 3053-3060页

作者： Lin-Ling Shen Jing Shi Chang-Wei Ding gao-Le dai Qi Ma Department of Ultrasound The Second Affiliated Hospital of Soochow UniversitySuzhou 215004Jiangsu ProvinceChina Department of Ultrasound Wuxi People’s Hospital of Nanjing Medical UniversityWuxi 211103Jiangsu ProvinceChina

BACKGROUND Subchorionic hematoma(SCH)is a common complication in early pregnancy characterized by the accumulation of blood between the uterine wall and the chorionic *** can lead to adverse pregnancy outcomes such as miscarriage,preterm birth,and other *** detection and accurate assessment of SCH are crucial for appropriate management and improved pregnancy *** To evaluate the diagnostic efficacy of virtual organ computer-assisted analysis(VOCAL)in measuring the volume ratio of SCH to gestational sac(GS)combined with serum progesterone on early pregnancy outcomes in patients with *** A total of 153 patients with SCH in their first-trimester pregnancies between 6 and 11 wk were *** patients were followed up until a gestational age of 20 *** parameters of transvaginal two-dimensional ultrasound,including the circumference of SCH(Cs),surface area of SCH(Ss),circumference of GS(Cg),and surface area of GS(Sg),and the parameters of VOCAL with transvaginal three-dimensional ultrasound,including the three-dimensional volume of SCH(3DVs)and GS(3DVg),were *** size of the SCH and its ratio to the GS size(Cs/Cg,Ss/Sg,3DVs/3DVg)were recorded and *** Compared with those in the normal pregnancy group,the adverse pregnancy group had higher Cs/Cg,Ss/Sg,and 3DVs/3DVg ratios(P<0.05).When 3DVs/3DVg was 0.220,the highest predictive performance predicted adverse pregnancy outcomes,resulting in an AUC of 0.767,and the sensitivity,specificity were 70.2%,75%*** measuring 3DVs/3DVg combined with serum progesterone gave a diagnostic AUC of 0.824 for early pregnancy outcome in SCH patients,with a high sensitivity of 82.1%and a specificity of 72.1%,which showed a significant difference between *** VOCAL-measured 3DVs/3DVg effectively quantifies the severity of SCH,while combined serum progesterone better predicts adverse pregnancy outcomes.

关键词： Subchorionic hematoma Virtual organ computer-assisted analysis Gestational sac Serum progesterone Ultrasound parameters Adverse pregnancy outcomes