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Optimization model of a structural simulation design for a CICC

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Chinese Science Bulletin 2011年第27期56卷 2978-2983页

作者： jiang huawei WU SongTao CHENG JunSheng College o fin formation Science and Engineering Henan University of Technology Zhengzhou 450001 China Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100080 China

The engineering design of a Cable-In-Conduit Conductor (CICC) is complicated. A model for the optimal design of a CICC based on conductor stability, AC loss and strain is proposed. The model considers the critical current density as a function of applied strain. A mathematical programming method that minimizes the AC loss of the CICC is established to yield an optimal design for the CICC structure. The optimized structure and related performance agree well with the engineering design values used for the KSTAR project.

关键词：优化模型仿真设计结构优化设计模型金临界电流密度数学规划方法工程设计

Analysis of the genomic landscape of primary central nervous system lymphoma using whole-genome sequencing in Chinese patients

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Frontiers of Medicine 2023年第5期17卷 889-906页

作者： Xianggui Yuan Teng Yu Jianzhi Zhao huawei jiang Yuanyuan Hao Wen Lei Yun Liang Baizhou Li Wenbin Qian Department of Hematology the Second Affiliated HospitalZhejiang University School of MedicineHangzhou310009China Department of Pathology the Second Affiliated HospitalZhejiang University School of MedicineHangzhou310009China National Clinical Research Center for Hematologic Diseases the First Affiliated Hospital of Soochow UniversitySuzhou215006China Cancer Institute(Key Laboratory of Cancer Prevention and Intervention China National Ministry of Education)the Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou310009China

Primary central nervous system lymphoma(PCNSL)is an uncommon non-Hodgkin’s lymphoma with poor *** study aimed to depict the genetic landscape of Chinese ***-genome sequencing was performed on 68 newly diagnosed Chinese PCNSL samples,whose genomic characteristics and clinicopathologic features were also *** variations were identified in all patients with a mean of 349,which did not significantly influence *** loss occurred in all samples,while gains were detected in 77.9%of the *** high level of copy number variations was significantly associated with poor progression-free survival(PFS)and overall survival(OS).A total of 263 genes mutated in coding regions were identified,including 6 newly discovered genes(ROBO2,KMT2C,CXCR4,MYOM2,BCLAF1,and NRXN3)detected in≥10%of the ***79B mutation was significantly associated with lower PFS,TMSB4X mutation and high expression of TMSB4X protein was associated with lower OS.A prognostic risk scoring system was also established for PCNSL,which included Karnofsky performance status and six mutated genes(BRD4,EBF1,BTG1,CCND3,STAG2,and TMSB4X).Collectively,this study comprehensively reveals the genomic landscape of newly diagnosed Chinese PCNSLs,thereby enriching the present understanding of the genetic mechanisms of PCNSL.

关键词： primary central nervous system lymphoma whole-genome sequencing TMSB4X copy number variation gene utation

Calculation model of AC loss for CICC(cable-in-conduit conductor) based on strain

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Science China(Technological Sciences) 2012年第5期55卷 1132-1139页

作者： jiang huawei WU SongTao ZHANG DeXian XU ZhaoHui ZHEN Tong College of Information Science and Engineering Henan University of TechnologyZhengzhou 450001China Institute of Plasma Physics Chinese Academy of SciencesHefei 230031China

The CICC (cable-in-conduit conductor) in ITER (International Thermal-nuclear Experimental Reactor) will run in high-current, fast transient magnet field and complex environment. In response to the impact of magnet fields above 10 T, the Nb3Sn conductor has been introduced. However, the AC (alternating current) loss mechanism of Nb3Sn conductor on strain has not been explored. So, it is necessary to study the AC loss calculation method with transient electromagnetic field and wide range of strain, the coupling current in complex field and current signal of field is simplified to the spectrum effects of coil excitation, and calculation technology of AC loss, which contains the frequency, magnet field, coil characteristics and other parameters, is constructed to meet the discrete Fourier transform (DFT). By comparative analysis of simulation, it is found that the AC loss calculation of the conductor with spectrum algorithm is closer to the actual project value than the traditional algorithm. For the rapid excitation, in particular plasma discharge and burst, spectrum algorithm and the traditional algorithm are consistent. For the relative error calculation of hysteresis loss and coupling loss, it is found that the coupling loss is cumulative linearly, where the hysteresis loss is not so. As a function of the amplitude, frequency and phase angle, the relative error is less than 40%. The results showed that the method of Fourier restructuring is satisfactory.

关键词： cable-in-conduit conductor (CICC) strain numeric simulation AC loss calculation model

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应变对Nb_3Sn股线临界特性退化影响

稀有金属材料与工程 2015年第6期44卷 1423-1426页

作者：蒋华伟河南工业大学河南郑州450001 中国科学院等离子体物理研究所安徽合肥230031

为应对12 T以上的磁场影响,国际热核聚变反应堆ITER和国内CFETR装置上环向和中心螺线磁体系统已采用Nb3Sn材料;而低温下临界温度和分流温度是超导体稳定运行的重要因素,由于缺乏应变效应对临界温度和分流温度影响的研究,为此,本研究利... 详细信息

为应对12 T以上的磁场影响,国际热核聚变反应堆ITER和国内CFETR装置上环向和中心螺线磁体系统已采用Nb3Sn材料;而低温下临界温度和分流温度是超导体稳定运行的重要因素,由于缺乏应变效应对临界温度和分流温度影响的研究,为此,本研究利用模拟应变作用的周期载荷,对Nb3Sn超导股线样品的临界温度和分流温度进行了测试以及数值模拟计算,分析获得扭距等作用使临界温度和分流温度随模拟应变载荷周期退化的结果。同时,推导分流温度随周期载荷变化的双对数分布模型,模型可以描述股线样品中由周期载荷导致的弯曲应变所产生的股线性能降级情况。

关键词：应变 Nb3Sn 股线临界特性退化

High-power 1560 nm single-frequency erbium fiber amplifier core-pumped at 1480 nm

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High Power Laser Science and Engineering 2023年第2期11卷 18-25页

作者： Xin Cheng Zhiquan Lin Xuezong Yang Shuizhen Cui Xin Zeng huawei jiang Yan Feng Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhouChina Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciencesand Shanghai Key Laboratory of Solid-State Laser and ApplicationShanghaiChina

High-power continuous-wave single-frequency Er-doped fiber amplifiers at 1560 nm by in-band and core pumping of a 1480 nm Raman fiber laser are investigated in *** co-and counter-pumping configurations are studied *** to 59.1 W output and 90%efficiency were obtained in the fundamental mode and linear polarization in the co-pumped case,while less power and efficiency were achieved in the counter-pumped setup for additional *** amplifier performs indistinguishably in terms of laser linewidth and relative intensity noise in the frequency range up to 10 MHz for both ***,the spectral pedestal is raised in co-pumping,caused by cross-phase modulation between the pump and signal laser,which is observed and analyzed for the first ***,the spectral pedestal is 34.9 dB below the peak,which has a negligible effect for most applications.

关键词： in-band pump Raman fiber laser single-frequency Er fiber amplifier

基于长短期记忆生成对抗网络的小麦品质多指标预测模型

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电子与信息学报 2020年第12期42卷 2865-2872页

作者：蒋华伟张磊河南工业大学信息科学与工程学院郑州450001

小麦多生理生化指标变化趋势反映了储藏品质的劣变状态,预测多指标时序数据会因关联性及相互作用而产生较大误差,为此该文基于长短期记忆网络(LSTM)和生成式对抗网络(GAN)提出一种改进拓扑结构的长短期记忆生成对抗网络(LSTM-GAN)模型... 详细信息

小麦多生理生化指标变化趋势反映了储藏品质的劣变状态,预测多指标时序数据会因关联性及相互作用而产生较大误差,为此该文基于长短期记忆网络(LSTM)和生成式对抗网络(GAN)提出一种改进拓扑结构的长短期记忆生成对抗网络(LSTM-GAN)模型。首先,由LSTM预测多指标不同时序数据的劣变趋势;其次,根据多指标的关联性并结合GAN的对抗学习方法来降低综合预测误差;最后通过优化目标函数及训练模型得出多指标预测结果。经实验分析发现:小麦多指标的长短期时序数据的变化趋势不同,进一步优化模型结构及训练时序长度可有效降低预测结果的误差;特定条件下小麦品质过快劣变会使多指标预测误差增大,因此应充分考虑储藏期环境变化对多指标数据的影响;LSTM-GAN模型的综合误差相对于仅使用LSTM预测降低了9.745%,并低于多种对比模型,这有助于提高小麦品质多指标预测及分析的准确性。

关键词：长短期记忆网络生成式对抗网络小麦多指标预测模型

Influence of cooling rate and addition of lanthanum and cerium on formation of nanoporous copper by chemical dealloying of Cu_(15)Al_(85) alloy

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Journal of Rare Earths 2013年第11期31卷 1119-1124页

作者：姜华伟李捷耿浩然王庆磊 School of Materials Science and Engineering University of Jinan Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials University of Jinan

The influence of cooling rate and addition of La and Ce on the formation of nanoporous copper by chemical dealloying of Cu15Al85 alloy was studied. The components and microstructures of nanoporous copper were characterized by utilizing X-ray diffrac-tion, field emission scanning electron microscopy and energy dispersive X-ray analysis. N2 adsorption/desorption experiments were used to evaluate specific surface areas of samples. The results showed that, with the increase of cooling rate, phase composition of precursor alloy almost had no change, the ligament size of nanoporous copper had a decrease trend, and specific surface area in-creased gradually. And it was found that the specific surface area of the nanoporous copper obtained by Cu15Al85 alloy containing La and Ce was 63.258 m2/g, which was more than 11.739 m2/g compared with the nanoporous copper dealloying by Cu15Al85 alloy without La and Ce under the same conditions.

关键词： cooling rate La Ce nanoporous copper specific surface area rare earths

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高功率拉曼光纤激光器技术研究进展

中国激光 2017年第2期44卷 69-81页

作者：冯衍姜华卫张磊中国科学院上海光学精密机械研究所上海201800

近年来,高功率拉曼光纤激光器技术发展迅速,输出波长范围覆盖可见光至中红外波段,最大输出功率超过千瓦。在功率提升方面,拉曼光纤激光器技术的发展脉络可概括为:激光振荡器、主振功率放大器和抽运/信号集成放大器。在重要科研应用的驱... 详细信息

近年来,高功率拉曼光纤激光器技术发展迅速,输出波长范围覆盖可见光至中红外波段,最大输出功率超过千瓦。在功率提升方面,拉曼光纤激光器技术的发展脉络可概括为:激光振荡器、主振功率放大器和抽运/信号集成放大器。在重要科研应用的驱动下,高功率窄线宽拉曼光纤放大器技术得到显著发展。另外,高功率拉曼光纤激光器技术还有一些新的扩展,包括包层抽运、二极管直接抽运以及拉曼光纤激光合束等,未来发展潜力巨大。

关键词：激光技术拉曼光纤激光器受激拉曼散射可调谐激光器

基于Fisher判别法则的小麦品质多指标分级

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农业工程学报 2019年第10期35卷 291-298页

作者：蒋华伟周同星河南工业大学信息科学与工程学院

小麦生理生化指标对研究其储藏品质具有重要的作用,但由于各指标间关系的复杂性,所表达的信息存在较大差别,这给小麦储藏品质分析带来很大的不便。针对该问题,该文提出了一种小麦储藏品质多指标分析模型,选取降落数值、发芽率、过氧化... 详细信息

小麦生理生化指标对研究其储藏品质具有重要的作用,但由于各指标间关系的复杂性,所表达的信息存在较大差别,这给小麦储藏品质分析带来很大的不便。针对该问题,该文提出了一种小麦储藏品质多指标分析模型,选取降落数值、发芽率、过氧化物酶、脂肪酸值、电导率、还原糖值、丙二醛7个生理生化指标作为分析的关键因素,通过相似性和主成分法对各指标进行分析计算,发现脂肪酸值最具代表性;基于脂肪酸值数据分布变化趋势,采用聚类分析方法对小麦分类;使用Fisher判别法对小麦数据进行训练,得到2类判别函数,其中判别函数1的贡献率达到89.7%,在该函数下,计算获得3种类别小麦的中心值为–5.699、1.316和3.945,从而为判断小麦的品质状况提供计算依据。试验计算结果表明,在18批储藏小麦中,该文判别模型对小麦的分类结果与实际参考标准分类结果的一致性达到88.9%,验证了本模型的合理性,研究结果可为小麦品质评价分类提供参考。

关键词：农产品品质控制模型生理生化指标相似性分析主成分分析系统聚类 Fisher判别法