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LSTM based prediction algorithm and abnormal change detection for temperature in aerospace gyroscope shell

International Journal of Intelligent Computing and Cybernetics 2019年第2期12卷 274-291页

作者： haoqiang shi Shaolin Hu Jiaxu Zhang School of Automation and Information Engineering Xi’an University of TechnologyXi’anChina Automation School Guangdong University of Petrochemical TechnologyMaomingChina

Purpose–Abnormal changes in temperature directly affect the stability and reliability of a *** the temperature and detecting the abnormal change is great value for timely understanding of the working state of the *** that the actual collected gyroscope shell temperature data have strong non-linearity and are accompanied by random noise pollution,the prediction accuracy and convergence speed of the traditional method need to be *** purpose of this paper is to use a predictive model with strong nonlinear mapping ability to predict the temperature of the gyroscope to improve the prediction accuracy and detect the abnormal ***/methodology/approach–In this paper,an double hiddenlayer long-shortterm memory(LSTM)is presentedto predicttemperature data for the gyroscope(including singlepoint andperiod prediction),and the evaluation index of the prediction effect is also proposed,and the prediction effects of shell temperature data are compared by BP network,support vector machine(SVM)and LSTM *** the estimated value detects the abnormal change of the ***–By combined simulation calculation with the gyroscope measured data,the effect of different network hyperparameters on shell temperature prediction of the gyroscope is analyzed,and the LSTM networkcan beusedto predictthe temperature(timeseriesdata).Bycomparingthe performance indicatorsof different prediction methods,the accuracy of the shell temperature estimation by LSTM is better,which can meet the requirements of abnormal change *** and accurate diagnosis of different types of gyroscopefaults(stepsanddrifts)can ***–The LSTMmodelisa deepneuralnetworkmodelwithmultiplenon-linearmapping levels,and can abstract the input signal layer by layer and extract features to discover deeper underlying *** improved method has been used to solve the problem of strong

关键词： Gyroscope LSTM Temperature prediction Recurrent neural network Abnormal change detection

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Research on development of in situ titanium matrix composites and in situ reaction thermodynamics of the reaction systems

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Journal of University of Science and Technology Beijing 2006年第6期13卷 551-557页

作者： Lifang Cai Yongzhong Zhang Likai shi haoqiang Yang Mingzhe Xi National Engineering Research Center for Nonferrous Metal Composites General Research Institute for Nonferrous Metals Beijing 100088 China

The in situ synthesis method for titanium matrix composites （TMCs） has obvious technical and economical advantages over other traditional methods. Ultrafine reinforcement particles were formed in situ by chemical reaction between elements or between elements and compounds. Using the approach, contamination at the composite matrix/reinforcement particle interface did not occur, interface bonding was good, and the reinforcement particle was thermodynamically stable. The stage of development of the preparation process for in situ TMCs as well as the thermodynamic analysis of the possible in situ reaction systems was described.

关键词： in situ titanium matrix composites reaction synthesis reaction system thermodynamic analysis

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Validation and accuracy analysis of wind products from scatterometer onboard the HY-2B satellite

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Acta Oceanologica Sinica 2023年第2期42卷 74-82页

作者： Sheng Yang Bo Mu haoqiang shi Chaofei Ma Wu Zhou Juhong Zou Mingsen Lin National Satellite Ocean Application Service Ministry of Natural ResourcesBeijing100081China Key Laboratory of Space Ocean Remote Sensing and Application Ministry of Natural ResourcesBeijing100081China China Academy of Space Technology(Xi’an Branch) Xi’an710100China

The Chinese marine dynamic environment satellite HY-2B was launched in October 2018 and carries a Ku-band *** paper focuses on the accuracies of HY-2B scatterometer wind data during the period from November 2018 to May *** HY-2B wind data are validated against global moored buoys operated by the *** Data Buoy Center and Tropical Atmosphere Ocean,numerical model data by the National Centers for Environmental Prediction,and the Advanced Scatterometer data issued by the Remote Sensing *** results showed that the wind speeds and directions observed by the HY-2B scatterometer agree well with these buoy wind *** root-mean-squared errors(RMSEs)of the HY-2B wind speed and direction are 0.74 m/s and 11.74°,*** low wind speeds(less than 5 m/s),the standard deviation of the HY-2B-derived wind direction is higher than 20°,which implies that the HY-2B wind direction for low wind speeds is less accurate than that for moderate to high wind speed *** RMSE of the HY-2B wind speed is slightly larger in high latitude oceans(60°–90°S and 60°–90°N)than in low latitude ***,the dependence of the residuals on the cross-track location of wind vector cells and the stability of the HY-2B scatterometer wind products are *** wind stability assessment results indicate that a clear yearly oscillation is observed for the HY-2B wind speed bias which is due to seasonal weather *** general,the accuracy of HY-2B winds meets the operational precision requirement and is consistent with other wind data.

关键词： sea surface wind validation microwave remote sensing scatterometer

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Abnormal odd-even staggering behavior around^132Sn studied by density functional theory

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Chinese Physics C 2020年第9期44卷 154-161页

作者： haoqiang shi Xiao-Bao Wang Guo-Xiang Dong Hualei Wang School of Science Huzhou UniversityHuzhou 313000China School of Physics and Engineering Zhengzhou UniversityZhengzhou 450001China

In this work,we have performed Skyrme density functional theory(DFT)calculations of nuclei around^132Sn to study whether the abnormal odd-even staggering(OES)behavior of binding energies around N=82 can be *** the Skyrme forces SLy4 and SkM*,we tested the volume-and surface-type pairing forces and also the intermediate between these two pairing forces,in the Hartree-Fock-Bogoliubov(HFB)approximation with or without the Lipkin-Nogami(LN)approximation or particle number projection after the convergence of HFBLN(PLN).The Universal Nuclear Energy Density Function(UNEDF)parameter sets are also *** trend of the neutron OES against the neutron number or proton number does not change significantly by tuning the density dependence of the pairing ***,for the pairing force that is favored more at the nuclear surface,a larger mass OES is obtained,and vice *** appears that the combination of volume and surface pairing can give better agreement with the *** the studies of the OES,a larger ratio of surface to volume pairing might be ***,in most cases,the OES given by the HFBLN approximation agrees more closely with the experimental *** found that both the Skyrme and pairing forces can influence the OES *** mass OES calculated by the UNEDF DFT is explicitly smaller than the experimental *** UNEDF1 and UNEDF2 forces can reproduce the experimental trend of the abnormal OES around^*** neutron OES of the tin isotopes given by the SkM*force agrees more closely with the experimental one than that given by the SLy4 force in most *** SLy4 and SkM*DFT have difficulties in reproducing the abnormal OES around^*** the PLN method,the systematics of OES are improved for several combinations of Skyrme and pairing forces.

关键词： odd-even mass staggering pairing correlation density functional theory

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Carbon dots self-assembly enables near-infrared emission

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Science China Chemistry 2025年

作者： Shurong Ding Shasha Liu Yuzhuo Yang Linlin shi Yongqiang Zhang Jingkun Yu haoqiang Song Yingge shi Siyu Lu College of Chemistry Pingyuan Laboratory Zhengzhou University Henan Institute of Advanced Technology Zhengzhou University

In the fields of biomedicine, detection, and anti-counterfeiting, there is a widespread demand for cost-effective, easily synthesized, and environmentally friendly near-infrared(NIR) materials. Carbon dots(CDs), a cheap and non-toxic zero-dimensional carbon nanomaterial exhibiting exceptional photoluminescence(PL) properties and facile structural modification, have emerged as a promising candidate for the development of novel NIR materials. This study presents the synthesis of CDs capable of emitting a wide range of wavelengths from blue to NIR(456–836 nm) as their concentrations increase. The incorporation of oxygen and nitrogen co-doped atoms facilitates the optimization of non-coplanar angles, thereby promoting favorable π-πstacking interactions. This leads to the formation of metal-free rigid clusters through interconnecting adjacent nanoparticles in a gear-like meshing pattern through self-assembly. Consequently, intramolecular motion is constrained, vibration coupling is mitigated, non-radiative transition losses are minimized, and efficient NIR emission from CD clusters in high concentrations is ensured. Furthermore, NIR light-emitting diode(NIR LED) based on the CD clusters was successfully fabricated and employed for various applications including information encryption, anti-counterfeiting, and penetration detection in the field of NIR imaging.

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Matlab和FPGA相结合的软硬件综合实验设计

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实验室研究与探索 2020年第1期39卷 103-107,124页

作者：石昊强蒋占军兰州交通大学电子与信息工程学院兰州730070 兰州交通大学电工电子国家级实验教学示范中心兰州730070

针对高校电子信息专业基础实验课程中工程性不足的问题,融合相关课程实验教学内容,通过Matlab软件与FPGA硬件设计了综合性实验。以FIR滤波器和ASK调制综合实验为例,对实验内容理论分析、Matlab验证、FPGA实现等设计与实验过程做了详细... 详细信息

针对高校电子信息专业基础实验课程中工程性不足的问题,融合相关课程实验教学内容,通过Matlab软件与FPGA硬件设计了综合性实验。以FIR滤波器和ASK调制综合实验为例,对实验内容理论分析、Matlab验证、FPGA实现等设计与实验过程做了详细解析。通过此类综合实验学生能够参与理论分析、软件仿真、硬件实现的整个系统开发流程,有利于培养学生综合运用专业知识解决复杂工程问题的能力。

关键词：综合实验设计 Matlab仿真 FIR滤波器 ASK调制

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中国肾移植患者中不同的CYP3A5*3基因型与西罗莫司血药浓度的关系

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中国医药工业杂志 2010年第9期41卷 678-682页

作者：石浩强许倍铭陈冰上海交通大学医学院附属瑞金医院药剂科上海200025

回顾性收集了服用西罗莫司的80例肾移植患者病例,建立了四引物法检测其CYP3A5基因型,并以聚合酶链反应-限制性片段长度多态性(PCR-RFLP)法进行对照。采用微粒子化学发光免疫法测定患者西罗莫司的谷浓度。80位患者的CYP3A5*3基因频率为79... 详细信息

回顾性收集了服用西罗莫司的80例肾移植患者病例,建立了四引物法检测其CYP3A5基因型,并以聚合酶链反应-限制性片段长度多态性(PCR-RFLP)法进行对照。采用微粒子化学发光免疫法测定患者西罗莫司的谷浓度。80位患者的CYP3A5*3基因频率为79%。*1/*1基因型患者有3人(3.75%),*1/*3基因型有28人(35%),*3/*3基因型有49人(61.25%)。三种基因型患者西罗莫司平均血药谷浓度分别为(4.17±0.90)、(5.96±2.43)和(6.39±2.86)ng/ml。表明不同CYP3A5基因型患者西罗莫司血药浓度差异显著,含有CYP3A5*1等位基因患者的西罗莫司血药浓度明显低于*3/*3组(P<0.05)。

关键词：西罗莫司 CYP3A5 基因多态性四引物PCR法血药浓度

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极端嗜热古菌DNA修复核酸内切酶的研究进展

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微生物学报 2019年第10期59卷 1889-1896页

作者：李玉婷史昊强张立奎扬州大学环境科学与工程学院海洋科学研究所

极端嗜热古菌由于生活在高温环境,其基因组DNA面临着严重的挑战,因此,它们如何维持其基因组稳定是本研究领域最为关注的科学问题之一。极端嗜热古菌具有与常温微生物相似的自发突变频率,暗示着它们比常温微生物具有更加有效的DNA修复体... 详细信息

极端嗜热古菌由于生活在高温环境,其基因组DNA面临着严重的挑战,因此,它们如何维持其基因组稳定是本研究领域最为关注的科学问题之一。极端嗜热古菌具有与常温微生物相似的自发突变频率,暗示着它们比常温微生物具有更加有效的DNA修复体系进行修复高温所造成的基因组DNA损伤。目前,极端嗜热古菌DNA修复的分子机制尚不清楚。核酸内切酶在DNA修复途径中发挥着重要的作用。基因组序列显示极端嗜热古菌编码多种DNA修复核酸内切酶,但是其研究尚处于初期阶段。本文综述了极端嗜热古菌DNA修复核酸内切酶Nuc S、Endo V、Endo Q、XPF和Hjc的研究进展,并对今后的研究提出了展望。

关键词：极端嗜热古菌核酸内切酶 DNA修复

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西罗莫司药动学的影响因素及治疗药物监测

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中国医药工业杂志 2010年第7期41卷 543-547页

作者：石浩强陈冰许倍铭上海交通大学医学院附属瑞金医院药剂科上海200025

西罗莫司是一种大环内酯类抗生素,试验表明其具有较强的免疫抑制活性。目前作为一种安全性较高的免疫抑制剂,常与环孢素、激素联合使用,用于预防器官移植的排异反应。本文对西罗莫司免疫活性机制、药动学研究和临床治疗药物监测进行归纳。

关键词：西罗莫司治疗药物监测药动学高效液相色谱微粒子酶免疫法

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MZI wavelength interleaving filter based on double microring structure

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Journal of Measurement Science and Instrumentation 2021年第1期12卷 93-97页

作者： YANG Ziwei ZHENG Yufu YE Jia shi haoqiang WEI Xiaoming School of Electronics and Information Engineering Lanzhou JiaoTong University Lanzhou 730070 China

To improve the output characteristics of all-fiber Mach-Zehnder interferometer(MZI)-interleaver,a dual microring-assisted MZI interleaver is *** to its structure,the output expression of the device is derived from the signal flow *** simulation analysis,the optimal structural parameters during the transmission process are *** addition,the coupling coefficient and transmission loss of the coupler are *** results show that the improved interleaver output line wave is closer to the square wave,and its 25 dB cutoff band bandwidth and 0.5 dB passband bandwidth are significantly improved,with the values of 41.2 GHz and 18.9 GHz,*** device has a certain resistantability to deviation,and the transmission loss has less influence on the extinction characteristics of the filter.

关键词： optical fiber communication Mach-Zehnder interferometer(MZI) interleaver dual microring resonator

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