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| 1 | On-chip programmable pulse processor employing cascaded MZI-MRR structure显示文摘Optical pulse processor meets the urgent demand for high-speed,ultra wideband devices,which can avoid electrical confinements in various fields,e.g.,alloptical communication,optical computing technology,cohcrcnt control and microwave fields.To date,great efforts have been madc particularly in on-chip programmable pulse proccessing.Here,we experimentally demonstrate a programmable pulse proceesor employing 16cascaded Mach-Zehnder interferometer coupled microring resonator(MZI-MRR)structure based on silicon-oninsulator wafer.With micro-heaters loaded to the device,both amplitude and frequency tunings can be realized in each MZI-MRR unit.Thanks to its reconfigurability and integration ability,First,it can serve as a fractional differentiator whose tuning range is 0.51-2.23 with deviation no more than 7%.Second,the device can be tuned into a programmable optical filter whose bandwidth varies from 0.15to 0.97nm.The optical filter is also shape tunable.Especially,15-channel wavelength selective switches are generated. | Yuhe ZHAO Xu WANG Dingshan GAO Jianji DONG Xinliang ZHANG | 2019 | Frontiers of Optoelectronics2019，12，2： | 9 |
| 2 | Development and Application of Lightning Protection Technologies in Power Grids of China显示文摘In recent years,along with the rapid expansion of power grids,the increasing complication of grid structures,and the development of smart grids and energy technologies,the lightning protection of power grids becomes increasingly prominent.Power grids of China have acquired significant achievements on lightning protection technologies,which are reviewed in this paper.A technical route of lightning protection is introduced in detail; it allows us to find problems through detection and measurement of lightning,to analyze problems through evaluation and simulation of lightning,to solve problems through lightning protection measures,and to prevent problems through hazard risk warning of lightning.Following the route,the technical breakthroughs of these four aspects in China are presented,including the chinese lightning detection network(CLDN),natural lightning observations,lightning faults detection at transmission lines,lightning current measurements,progresses in lightning distribution maps,lightning fault replays,lightning hazard risk evaluations,and lightning simulated experiments,as well as novel lightning protection measures.The practical devices and systems corresponding to the technologies mentioned above are also introduced and discussed.Due to the progress of lightning protection technologies in recent years,despite the rapidly growing length of transmission lines in China,the lightning accident rate is controlled at a certain level. | GU Shanqiang CHEN Jiahong FENG Wanxing ZHAO Chun FANG Yuhe LI Tao | 2013 | 高电压技术2013，39，10： | 8 |
| 3 | Audiological evaluation in Chinese patients with mitochondrial encephalomyopathies显示文摘 | Liu Yuhe Xue Junfang Zhao Danhua Chen Li Yuan Yun Wang Zhaoxia | 2014 | Chinese Medical Journal2014，，12： | 6 |
| 4 | Tunable optical delay line based on integrated grating-assisted contradirectional couplers显示文摘Tunable optical delay lines are one of the key building blocks in optical communication and microwave systems.In this work, tunable optical delay lines based on integrated grating-assisted contradirectional couplers are proposed and experimentally demonstrated. The device performance is comprehensively improved in terms of parameter optimization, apodization analysis, and electrode design. Tunable group delay lines of 50 ps at different wavelengths within the bandwidth of 12 nm are realized with a grating length of 1.8 mm. Under thermal tuning mode, the actual delay tuning range is around 20 ps at 7.2 V voltage. At last, a new scheme adopting an ultra-compact reflector for doubling group delay is proposed and verified, achieving a large group delay line of 400 ps and a large dispersion value up to 5.5 × 10~6 ps∕(nm · km) within bandwidth of 12 nm. Under thermal tuning mode, the actual delay tuning range is around 100 ps at 8 V voltage. | XU WANG YUHE ZHAO YUNHONG DING SANSHUI XIAO JIANJI DONG | 2018 | Photonics Research2018，6，9： | 4 |
| 5 | Construction of the Chinese Veteran Clinical Research (CVCR) Platform for the assessment of non-communicable diseases显示文摘 | Tan Jiping Li Nan Gao Jing Guo Yuhe Hu Wei Yang Jinsheng Yu Baocheng Yu Jianmin Du Wei Zhang Wenjun Cui Lianqi Wang Qingsong Xia Xiangnan Li Jianjun Zhou Peiyi Zhang Baohe Liu Zhiying Zhang Shaogang Sun Lanying Liu Nan Deng Ruixiang Dai Wenguang Yi Fang Chen Wenjun Zhang Yongqing Xue Shenwu Cui Bo Zhao Yiming Wang Luning | 2014 | Chinese Medical Journal2014，，3： | 3 |
| 6 | LASER GLAZING OF Ni-Nb AND Ni-Nb-Cr ALLOYS AND CORROSION RESISTANCE OF AMORPHOUS LAYERS显示文摘Partially amorphous Ni-Nb alloy was made by 1.91 kW cw CO2 laser melt-quenching,and fully amorphous by 4.5 kW and 4.9 kW.The corrosion resistance of the amor-phous layer was improved by adding Cr.Potentiodynamic polarization curves showthat the amorphous Ni50Nb40Cr10 is in more corrosion-resistant than the amorphousNi60Nb40and 18-8 stainless steel. | YAN Yuhe YANG Yongqiang ZHAO Changming Tianjin Institute of Textile Science and Technology,Tianjin,ChinaWU Weitao WANG Maocai Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang,ChinaLU Mengfu Tianjin Institute of Science and Technology,Tianjin,China Lecturer,Laser Processing Lab.,Tianjin Institute of Textile Science and Technology,Tianjin 300160,China | 1993 | Acta Metallurgica Sinica(English Letters)1993，6，7： | 1 |
| 7 | Highly efficient green InP-based quantum dot light-emitting diodes regulated by inner alloyed shell component显示文摘InP-based quantum dot light-emitting diodes(QLEDs),as less toxic than Cd-free and Pb-free optoelectronic devices,have become the most promising benign alternatives for the next generation lighting and display.However,the development of green-emitting InP-based QLEDs still remains a great challenge to the environmental preparation of InP quantum dots(QDs)and superior device performance.Herein,we reported the highly efficient green-emitting InP-based QLEDs regulated by the inner alloyed shell components.Based on the environmental phosphorus tris(dimethylamino)phosphine((DMA)3P),we obtained highly efficient InP-based QDs with the narrowest full width at half maximum(~35 nm)and highest quantum yield(~97%)by inserting the gradient inner shell layer ZnSe_(x)S_(1-x)without further post-treatment.More importantly,we concretely discussed the effect and physical mechanism of ZnSe_(x)S_(1-x)layer on the performance of QDs and QLEDs through the characterization of structure,luminescence,femtosecond transient absorption,and ultraviolet photoelectron spectroscopy.We demonstrated that the insert inner alloyed shell ZnSe_(x)S_(1-x)provided bifunctionality,which diminished the interface defects upon balancing the lattice mismatch and tailored the energy levels of InP-based QDs which could promote the balanced carrier injection.The resulting QLEDs applying the InP/ZnSe_(0.7)S_(0.3)/ZnS QDs as an emitter layer exhibited a maximum external quantum efficiency of 15.2%with the electroluminescence peak of 532 nm,which was almost the highest record of InP-based pure green-emitting QLEDs.These results demonstrated the applicability and processability of inner shell component engineering in the preparation of high-quallity InP-based QLEDs. | Peng Yu Sheng Cao Yuliang Shan Yuhe Bi Yaqi Hu Ruosheng Zeng Bingsuo Zou Yunjun Wang Jialong Zhao | 2022 | Light(Science & Applications)2022，11，7： | 1 |
| 8 | A small microring array that performs large complex-valued matrix-vector multiplication显示文摘As an important computing operation,photonic matrix-vector multiplication is widely used in photonic neutral networks and signal processing.However,conventional incoherent matrix-vector multiplication focuses on real-valued operations,which cannot work well in complex-valued neural networks and discrete Fourier transform.In this paper,we propose a systematic solution to extend the matrix computation of microring arrays from the real-valued field to the complex-valued field,and from small-scale(i.e.,4×4)to large-scale matrix computation(i.e.,16×16).Combining matrix decomposition and matrix partition,our photonic complex matrix-vector multiplier chip can support arbitrary large-scale and complex-valued matrix computation.We further demonstrate Walsh-Hardmard transform,discrete cosine transform,discrete Fourier transform,and image convolutional processing.Our scheme provides a path towards breaking the limits of complex-valued computing accelerator in conventional incoherent optical architecture.More importantly,our results reveal that an integrated photonic platform is of huge potential for large-scale,complex-valued,artificial intelligence computing and signal processing. | Junwei Cheng Yuhe Zhao Wenkai Zhang Hailong Zhou Dongmei Huang Qing Zhu Yuhao Guo Bo Xu Jianji Dong Xinliang Zhang | 2022 | Frontiers of Optoelectronics2022，15，2： | 1 |
| 9 | Growth and production of free-living heterotrophic nanoflagellates in a eutrophic lake-Lake Donghu, Wuhan, China显示文摘 | ZHAO Yufeng YU Yuhe FENG Weisong | 2003 | Hvdrobiolohia2003，498，： | 1 |
| 10 | Diploid chromosome-level reference genome and population genomic analyses provide insights into Gypenoside biosynthesis and demographic evolution of Gynostemma pentaphyllum (Cucurbitaceae)显示文摘Gynostemma pentaphyllum(Thunb.)Makino is a perennial creeping herbaceous plant in the family Cucurbitaceae,which has great medicinal value and commercial potential,but urgent conservation efforts are needed due to the gradual decreases and fragmented distribution of its wild populations.Here,we report the high-quality diploid chromosome-level genome of G.pentaphyllum obtained using a combination of next-generation sequencing short reads,Nanopore long reads,and Hi-C sequencing technologies.The genome is anchored to 11 pseudo-chromosomes with a total size of 608.95 Mb and 26588 predicted genes.Comparative genomic analyses indicate that G.pentaphyllum is estimated to have diverged from Momordica charantia 60.7 million years ago,with no recent whole-genome duplication event.Genomic population analyses based on genotyping-by-sequencing and ecological niche analyses indicated low genetic diversity but a strong population structure within the species,which could classify 32 G.pentaphyllum populations into three geographical groups shaped jointly by geographic and climate factors.Furthermore,comparative transcriptome analyses showed that the genes encoding enzyme involved in gypenoside biosynthesis had higher expression levels in the leaves and tendrils.Overall,the findings obtained in this study provide an effective molecular basis for further studies of demographic genetics,ecological adaption,and systematic evolution in Cucurbitaceae species,as well as contributing to molecular breeding,and the biosynthesis and biotransformation of gypenoside. | Xiao Zhang Yuhe Zhao Yixuan Kou Xiaodan Chen Jia Yang Hao Zhang Zhe Zhao Yuemei Zhao Guifang Zhao Zhonghu Li | 2023 | Horticulture Research2023，10，1： | 0 |
| 11 | Academic Dispute or Struggle for Survival?显示文摘 | Zuo Yuhe Zhao Baohua(Translated) | 2005 | Social Sciences in China2005，26，4： | 0 |
| 12 | A New Model for Network Security Situation Assessment of the Industrial Internet显示文摘To address the problem of network security situation assessment in the Industrial Internet,this paper adopts the evidential reasoning(ER)algorithm and belief rule base(BRB)method to establish an assessment model.First,this paper analyzes the influencing factors of the Industrial Internet and selects evaluation indicators that contain not only quantitative data but also qualitative knowledge.Second,the evaluation indicators are fused with expert knowledge and the ER algorithm.According to the fusion results,a network security situation assessment model of the Industrial Internet based on the ER and BRB method is established,and the projection covariance matrix adaptive evolution strategy(P-CMA-ES)is used to optimize the model parameters.This method can not only utilize semiquantitative information effectively but also use more uncertain information and prevent the problem of combinatorial explosion.Moreover,it solves the problem of the uncertainty of expert knowledge and overcomes the problem of low modeling accuracy caused by insufficient data.Finally,a network security situation assessment case of the Industrial Internet is analyzed to verify the effectiveness and superiority of the method.The research results showthat this method has strong applicability to the network security situation assessment of complex Industrial Internet systems.It can accurately reflect the actual network security situation of Industrial Internet systems and provide safe and reliable suggestions for network administrators to take timely countermeasures,thereby improving the risk monitoring and emergency response capabilities of the Industrial Internet. | Ming Cheng Shiming Li Yuhe Wang Guohui Zhou Peng Han Yan Zhao | 2023 | Computers, Materials & Continua2023，，5： | 0 |
| 13 | Log Anomaly Detection Through GPT-2 for Large Scale Systems显示文摘As the scale of software systems expands,maintaining their stable operation has become an extraordinary challenge.System logs are semi-structured text generated by the recording function in the source code and have important research significance in software service anomaly detection.Existing log anomaly detection methods mainly focus on the statistical characteristics of logs,making it difficult to distinguish the semantic differences between normal and abnormal logs,and performing poorly on real-world industrial log data.In this paper,we propose an unsupervised framework for log anomaly detection based on generative pre-training-2(GPT-2).We apply our approach to two industrial systems.The experimental results on two datasets show that our approach outperforms state-of-the-art approaches for log anomaly detection. | JI Yuhe HAN Jing ZHAO Yongxin ZHANG Shenglin GONG Zican | 2023 | ZTE Communications2023，21，3： | 0 |
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