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FSS: algorithm and neural network accelerator for style transfer

Science China(Information Sciences) 2024年第2期67卷 253-266页

作者： Yi liNG Yujie HUANG Yujie CAI zhaojie li Mingyu WANG Wenhong li Xiaoyang ZENG State Key Laboratory of ASIC & System Fudan University Shanghai Explore X Technology Co. Ltd.

Neural networks(NNs), owing to their impressive performance, have gradually begun to dominate multimedia processing. For resource-constrained and energy-sensitive mobile devices, an efficient NN accelerator is necessary. Style transfer is an important multimedia application. However, existing arbitrary style transfer networks are complex and not well supported by current NN accelerators, limiting their application on mobile devices. Moreover, the quality of style transfer needs improvement. Thus, we design the Fast Style system(FSS), where a novel algorithm and an NN accelerator are proposed for style transfer. In FSS, we first propose a novel arbitrary style transfer algorithm, Fast Style. We propose a light network that contributes to high quality and low computational complexity and a prior mechanism to avoid retraining when the style changes. Then, we redesign an NN accelerator for Fast Style by applying two improvements to the basic NVIDIA deep learning accelerator(NVDLA) architecture. First, a flexible dat FSM and wt FSM are redesigned to enable the original data path to perform other operations(including the GRAM operation)by software programming. Moreover, statistics and judgment logic are designed to utilize the continuity of a video stream and remove the data dependency in the instance normalization, which improves the accelerator performance by 18.6%. The experimental results demonstrate that the proposed Fast Style can achieve higher quality with a lower computational cost, making it more suitable for mobile devices. The proposed NN accelerator is implemented on the Xilinx VCU118 FPGA under a 180-MHz clock. Experimental results show that the accelerator can stylize 512×512-pixel video with 20 FPS, and the measured performance reaches up to 306.07 GOPS. The ASIC implementation in TSMC 28 nm achieves about 22 FPS in the case of a 720-p video.

关键词： neural network accelerator style transfer neural network deep learning

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Gd-La-Al合金的微观结构与磁热效应

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中国稀土学报 2024年第1期42卷 62-69,I0003页

作者：高磊戴默涵程娟刘翠兰王鹏宇李兆杰包头稀土研究院白云鄂博稀土资源研究与综合利用国家重点实验室内蒙古包头014030

以Gd_(3-x)La_(x)Al_(2)(x=0,0.1,0.2,0.3)磁制冷材料为研究对象,系统分析了合金的相组成、微观组织及磁热性能。结果表明,Gd_(3-x)La_(x)Al_(2)(x=0,0.1,0.2,0.3)合金均由Gd_(3)Al_(2)相、GdAl相、Gd_(2)Al相组成。La原子主要分布于Gd_(2)Al相,且La元素的添加具有调控Gd Al相形貌的作用。对M-T曲线求一阶导数可得,Gd_(3-x)La_(x)Al_(2)(x=0,0.1,0.2,0.3)合金的居里温度T_(C)随La含量的增加呈逐渐降低的趋势,分别为275,267,261,252 K,适用于近室温领域的制冷。利用Landau理论,分析了Gd_(3-x)La_(x)Al_(2)(x=0,0.1,0.2,0.3)合金的磁相变特征。分析拟合结果可知,Gd_(3-x)La_(x)Al_(2)(x=0,0.1,0.2,0.3)合金在居里温度T_(C)附近发生二级磁相变。0~2 T磁场下Gd_(3)Al_(2)合金的最大等温磁熵变(ΔS_(M))^(max)为3.05 J·kg^(-1)·K^(-1),最大绝热温变(ΔT_(ad))^(max)为2.12 K,表现出良好的磁热性能。

关键词：磁制冷材料微观组织磁相变磁热性能稀土

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强化降压治疗对老年高血压合并冠心病血脂相关指标的作用

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公共卫生与预防医学 2024年第5期35卷 150-154页

作者：李朝杰赵永侠西安医学院第一附属医院心血管内科陕西西安710077 西安医学院第一附属医院教研室陕西西安710077

目的探究强化降压治疗对老年高血压合并冠心病血脂相关指标的影响,并评估预测冠脉病变严重程度的临床指标。方法纳入2021年1月至2023年1月期间1250例老年高血压合并冠心病患者,随机分为常规降压组和强化降压组。收集治疗前后空腹血脂水... 详细信息

目的探究强化降压治疗对老年高血压合并冠心病血脂相关指标的影响,并评估预测冠脉病变严重程度的临床指标。方法纳入2021年1月至2023年1月期间1250例老年高血压合并冠心病患者,随机分为常规降压组和强化降压组。收集治疗前后空腹血脂水平,干预1个疗程后进行冠脉造影(coronary angiography,CAG)及Gensini(GS)评分。比较两组患者血脂相关指标及其比值,并分析其与GS评分的相关性。结果两组患者治疗后TG、TC、LDL-C均降低,HDL-C上升;且强化降压治疗组治疗后TC、LDL-C、TC/TG、LDL-C/HDL-C均低于常规降压治疗组,而TG/LDL-C高于常规降压治疗组,组间差异均有统计学意义(P0.05)。多因素校正回归分析中,LDL-C/HDL-C与GS评分呈正相关(OR=1.442,95%CI:1.146~1.814,P<0.05)。结论与常规降压治疗相比,强化降压治疗后,老年高血压合并冠心病患者的TC、LDL-C、TC/TG、LDL-C/HDL-C均有显著下降,TG/LDL-C显著升高;老年高血压合并冠心病患者TC、LDL-C、TC/TG、LDL-C/HDL-C、TG/LDL-C与冠脉病变严重程度具有一定相关性,其中LDL-C/HDL-C可作为评估冠脉病变严重程度的临床指标。

关键词：老年人高血压冠心病血脂预后

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大力发展新质生产力助推水利高质量发展——关于水利行业发展新质生产力的认识和思考

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水利发展研究 2024年第6期24卷 1-6页

作者：李肇桀张旺刘璐水利部发展研究中心北京100038

发展新质生产力,是当前摆在我们全党全国人民面前的一项伟大而艰巨的政治任务,关系到国运和未来,关系到中国式现代化目标的实现,水利行业责无旁贷。文章从深入学习领会习近平总书记关于发展新质生产力的重要论述入手,深刻理解什么是新... 详细信息

发展新质生产力,是当前摆在我们全党全国人民面前的一项伟大而艰巨的政治任务,关系到国运和未来,关系到中国式现代化目标的实现,水利行业责无旁贷。文章从深入学习领会习近平总书记关于发展新质生产力的重要论述入手,深刻理解什么是新质生产力、为什么要发展新质生产力和如何发展新质生产力等一系列核心问题,为水利行业大力发展新质生产力、助推水利高质量发展提供参考和借鉴。

关键词：发展新质生产力水利行业水利高质量发展

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新型磁热效应直接测量仪的研制与性能测试

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中国测试 2024年第4期50卷 97-101页

作者：高磊李兆杰刘翠兰金培育包头稀土研究院白云鄂博稀土资源研究与综合利用国家重点实验室内蒙古包头014030

基于Halbach旋转原理,设计三种尺寸的中空圆柱形NdFeB永磁磁体。利用有限元法计算的结果表明,NdFeB永磁磁体中间空隙处可产生匀强磁场,磁感应强度分别为1.0 T、1.5 T和2.0 T,方向和主磁体的磁化方向相同。NdFeB永磁磁体中轴线上磁场分... 详细信息

基于Halbach旋转原理,设计三种尺寸的中空圆柱形NdFeB永磁磁体。利用有限元法计算的结果表明,NdFeB永磁磁体中间空隙处可产生匀强磁场,磁感应强度分别为1.0 T、1.5 T和2.0 T,方向和主磁体的磁化方向相同。NdFeB永磁磁体中轴线上磁场分布的测试结果和计算结果相吻合,误差在5%以内。基于绝热温变的直接测量法,研制磁热效应直接测量仪。对典型磁热材Gd的测试结果表明,磁热效应直接测量仪可准确测量磁热材料的绝热温变,精度在0.2℃以内。该磁热效应直接测量仪对样品的形状要求较低,测量时间短,测试过程简便。

关键词：磁热效应直接测量仪 NdFeB永磁磁体绝热温变

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LaFe11.6Si1.4/10%Ni复合磁制冷材料的制备与性能研究

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稀有金属 2024年第8期48卷 1200-1207页

作者：高磊李兆杰程娟戴默涵钟喜春刘翠兰包头稀土研究院白云鄂博稀土资源研究与综合利用国家重点实验室华南理工大学材料科学与工程学院

利用放电等离子烧结（SPS）技术制备了LaFe11.6Si1.4/10%Ni复合磁制冷材料，结合X射线衍射仪（XRD）、光学显微镜（OM）、综合物性测量系统（PPMS）和电子万能试验机等手段，研究了烧结压力和热处理对复合材料微观组织、磁热性能和机械... 详细信息

利用放电等离子烧结（SPS）技术制备了LaFe11.6Si1.4/10%Ni复合磁制冷材料，结合X射线衍射仪（XRD）、光学显微镜（OM）、综合物性测量系统（PPMS）和电子万能试验机等手段，研究了烧结压力和热处理对复合材料微观组织、磁热性能和机械性能的作用规律。结果表明，30,40,50和60 MPa压力下SPS态和热处理态LaFe11.6Si1.4/10%Ni复合磁制冷材料均由α-Fe相、Ni相和La（Fe,Si）13相（1∶13相）组成；且热处理提高了LaFe11.6Si1.4基体中Ni的含量。烧结压力的提高有利于孔隙数量和体积的减小，提高复合磁制冷材料的致密度。高温热处理过程中，孔隙出现“吞并”现象，因此热处理态LaFe11.6Si1.4/10%Ni复合磁制冷材料的孔隙数量减小，体积增大。烧结压力为50 MPa时，0～2 T下SPS态和热处理态LaFe11.6Si1.4/10%Ni复合磁制冷材料的等温磁熵变（ΔSM）分别为2.43和0.94 J·kg-1·K-1，居里温度（Tc）分别约为200和284 K。压缩应力-应变测试结果表明，热处理态LaFe11.6Si1.4/10%Ni复合磁制冷材料的抗压强度和压缩率随烧结压力的增强而增大。

关键词：复合磁制冷材料等温磁熵变居里温度力学性能

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The effects of fucoidans from Laminaria japonica on AAPH mediated oxidation of human low-density lipoprotein

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Acta Oceanologica Sinica 2006年第4期25卷 124-130页

作者： li Laihao XUE Changhu XUE Yong li zhaojie FU Xueyan South China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Guangzhou 510300 China Department of Food Science and Technology Ocean University of China Qingdao 266003 China

Five fucoidan fractions from Laminaria japonica with different sulfate content and molecular weight were prepared by anion-exchange chromatography and mild acid hydrolysis. Their antioxidant effects on azo radicals 2-2＇-Azobis （2-amidinopropane） dihydrochloride （AAPH） induced oxidation of human low-density lipoprotein （LDL） were evaluated by monitoring cholesteryl ester hydroperoxides （CHL-OOH） formation kinetics through reverse-phase high performance liquid chromatography （RP-HPLC） analysis. Fucoidan F - C with a low molecular mass of 2 000 ～8 000 and a sulfate content of 24.3% had much stronger protective antioxidant effect than other four fucoidan fractions on the hydrophilic radical AAPH induced LDL oxidation. However, the highly sulfated fucoidan fraction L - B with a molecular mass of 20 000 was completely ineffective in protecting LDL from the AAPH induced oxidation. The results suggested that both molecular mass and sulfate content of fucoidan played very important roles in their effects on the AAPH induced LDL oxidation.

关键词： Laminaria japonica fucoidan fraction low-density lipoprotein antioxidant cholesteryl ester hydroperoxide

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Simultaneously realizing good volumetric entropy change and mechanical strength of La_(0.8)Ce_(0.2)Fe_(11.51)Mn_(0.19)Si_(1.3)H_(y) plates

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Journal of Rare Earths 2023年第10期41卷 1568-1573,I0004页

作者： Juan Cheng Caiyin You Bo li Yaru Guo zhaojie li Lei Gao Pengyu Wang School of Materials Science and Technology Xi'an University of TechnologyXi'an710048China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou014030China

It is hard to get a high-strength La(Fe,Si)_(13)-based hydrides owing to the brittle feature of *** this work,we fabricated the La_(0.8)Ce_(0.2)Fe_(11.51)Mn_(0.19)Si_(1.3)plates through hot pressing at 1323 K for various ***,the saturated hydrogenization is achieved at 593 K in H_2 atmosphere of 0.13 MPa for 210 *** microstructure and magnetocaloric properties were investigated by an X-ray diffractometer,a scanning electron microscope and the *** magnetic fields of 0-2 T,the maximal volumetric entropy change is 91.4 mJ/(cm^(3)·K)at 297 K for the hydride *** hydride plate simultaneously has excellent mechanical properties with the maximum bending strength of 213 MPa,which suggest that the hot pressing followed by hydrogenation could be an effective route of fabricating La(Fe,Si)_(13)-based hydrides for the potential application in the magnetic refrigerator.

关键词： Magnetocaloric effect Mechanical strength Volumetric entropy change Hot-pressing Rare earths

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Analyzing the Flavor Compounds in Chinese Traditional Fermented Shrimp Pastes by HS-SPME-GC/MS and Electronic Nose

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Journal of Ocean University of China 2017年第2期16卷 311-318页

作者： FAN Yan YIN li-ang XUE Yong li zhaojie HOU Hu XUE Changhu College of Food Science and Engineering Ocean University of ChinaQingdao 266003P.R.China

Shrimp paste is a type of condiments with high nutritional ***,the flavors of shrimp paste,particularly the non-uniformity flavors,have limited its application in food *** order to identify the characteristic flavor compounds in Chinese traditional shrimp pastes,five kinds of typical commercial products were evaluated in this *** differences in the volatile composition of the five products were *** phase micro-extraction method was employed to extract the volatile ***-MS and electronic nose were applied to identify the compounds,and the data were analyzed using principal component analysis(PCA).A total of 62 volatile compounds were identified,including 8 alcohols,7 aldehydes,3 ketones,7 ethers,7 acids,3 esters,6 hydrocarbons,12 pyrazines,2 phenols,and 7 other *** typical volatile compounds contributing to the flavor of shrimp paste were found as follows:dimethyl disulfide,dimethyl tetrasulfide,dimethyl trisulfide,2,3,5-trimethyl-6-ethyl pyrazine,ethyl-2,5-dimethyl-pyrazine,phenol and *** acid,butanoic acid,furans,and 2-hydroxy-3-pentanone caused unpleasant odors,such as pungent and rancid *** component analysis showed that the content of volatile compounds varied depending on the processing conditions and shrimp *** results indicated that the combinations of multiple analysis and identification methods could make up the limitations of a single method,enhance the accuracy of identification,and provide useful information for sensory research and product development.

关键词： volatile flavor compounds GC-MS electronic nose sensory analysis

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An ultrasound-triggered cation chelation and reassembly route to one-dimensional Ni-rich cathode material enabling fast charging and stable cycling of li-ion batteries

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Nano Research 2020年第12期13卷 3347-3357页

作者： Yongjian Lai zhaojie li Wenxia Zhao Xiaoning Cheng Shuo Xu Xiao Yu Yong liu School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and TechnologiesSun Yat-sen UniversityGuangzhou510275China Instrumental Analysis&Research Center Sun Yat-sen UniversityGuangzhou510275China

Ni-rich oxides,liNixMnyCozO2(NMC),are among leading candidates for cathode materials in li-ion ***,they are mostly fabricated by coprecipitation approach under complex conditions,which usually produces large secondary particles composed of aggregated primary *** cation mixing and crack propagation upon cycling block ion and electron transport,result in fast capacity fading and poor rate ***,we present an ultrasound-triggered cation chelation and reassembly route for synthesizing one-dimensional precursor with homogeneous element distribution at the atomic *** process is accomplished by the synergistic combination of ultrasound and surfactant,which can disperse reactants and remove hydration shells surrounding cations so as to accelerate chelating reaction,and then separate and assemble chelates into one dimensional *** whole synthesis time is only 20 min(8.9 min of ultrasonic working time)in an open vessel under natural ambient ***-dimensional liNi0.6Mn0.2Co0.2O2 has a high reversible capacity(184 mAh·g^−1 at 0.1 C)and long cycling stability(95.1%and 82.4%capacity retention for 100 and 1000 cycles,respectively).The short charging time of 76 s is realized at super high current rate of 20 C,which is very important to improve the competitiveness of electric vehicles relative to fuel *** synthetic approach can provide a general strategy for the growth of mixed-metal-EDTA chelate precursors by changing the feeding ratio of Ni2+,Mn2+and Co2+cations in reaction for fabricating NMC cathode materials with other compositions.

关键词： li-ion batteries Ni-rich oxides ultrasound one dimensional structure cathode materials

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