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On the p-Adic Complexity of the Ding-Helleseth-Martinsen Binary Sequences

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Chinese Journal of Electronics 2021年第1期30卷 64-71页

作者： JING Xiaoyan XU Zhefeng yang minghui FENG Keqin Research Center for Number Theory and Its Applications Northwest University State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Department of Mathematical Sciences Tsinghua University

The purpose of this paper is to determine the p-adic complexity of the Ding-Helleseth-Martinsen（DHM） sequences with period N = 2 q, where q ≡ 5（mod 8） is a prime number. We firstly use the p-adic exponential valuation, cyclotomic numbers of order four,"Gauss periods" and "quadratic Gauss sums" on finite field Fq and valued in Z;to determine the p-adic complexity of the DHM sequences.

关键词： sequences number theory binary sequences Gauss periods adic exponential valuation polynomials Ding-Helleseth-Martinsen binary prime number DHM sequences computational complexity adic complexity cyclotomic numbers Ding-Helleseth-Martinsen sequences

Detection protein biomarker with gold nanoparticles functionalized hollow mesoporous Prussian blue nanoparticles as electrochemical probes

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Chinese Chemical Letters 2020年第1期31卷 202-204页

作者： Jing Luo Ting Li minghui yang Department of General Surgery The Second Xiang-ya HospitalCentral South UniversityChangsha 410011China Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China

Gold nanoparticles functionalized hollow mesoporous Prussian blue nanoparticles(Au@HMPB NPs)were synthesized and its peroxidase-like activity was explored for electrochemical *** Au@HMPB NPs can reduce H2O2 low detection potential of-0.1 V with high *** physically adsorption of antibodies onto the gold nanoparticle surface,the functionalized nanoparticles were turned into *** soluble a-chain of interleukin-2(IL-2)receptor(sCD25)was chosen as a model protein biomarker to test the performance of the ***25 in the samples were captured and enriched by capture anti-CD25 antibody functionalized magnetic *** antibody functionalized Au@HMPB can then be linked onto the nanospheres and generate electrochemical current towards H2O2 *** electrochemical responses to 1 mmol/L H2O2 was increased with the increasing concentration of CD25.

关键词： God nanoparticles Prussian blue Electrochemical Peroxidase CD25

Optimal harvesting strategy and stability analysis of a delay-induced prey-predator system with stage structure

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Journal of Control and Decision 2016年第3期3卷 197-210页

作者： Lingling Xie Jianguo Gao minghui yang School of Mathematics and Information Science Beifang University of NationalitiesYinchuanP.R.China

A stage-structured prey-predator model with time delay and harvesting is *** novel sufficient conditions for the local stability of the positive equilibria are obtained by Routh-Hurwitz ***,the existence of a Hopf bifurcation at the coexistence equilibrium is ***,the optimal harvesting problem is formulated and solved by Pontryagin’s maximum principle,and an example is given for illustration.

关键词： Stage structure time delay Hopf bifurcation optimal harvesting

A Double-Compensation-Based Federated Learning Scheme for Data Privacy Protection in a Social IoT Scenario

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Computers, Materials & Continua 2023年第7期76卷 827-848页

作者： Junqi Guo Qingyun Xiong minghui yang Ziyun Zhao School of Artificial Intelligence Beijing Normal UniversityBeijing100875China Engineering Research Center of Intelligent Technology and Educational Application Ministry of EducationBeijing100875China

Nowadays,smart wearable devices are used widely in the Social Internet of Things(IoT),which record human physiological data in real *** protect the data privacy of smart devices,researchers pay more attention to federated *** the data leakage problem is somewhat solved,a new challenge has *** federated learning shortens the convergence time,while it has time delay and data heterogeneity *** of the two problems harm the *** overcome these issues,we propose an asynchronous federated learning scheme based on double compensation to solve the problem of time delay and data heterogeneity *** scheme improves the Delay Compensated Asynchronous Stochastic Gradient Descent(DC-ASGD)algorithm based on the second-order Taylor expansion as the delay *** adds the FedProx operator to the objective function as the heterogeneity ***,the proposed scheme motivates the federated learning process by adjusting the importance of the participants and the central *** conduct multiple sets of experiments in both conventional and heterogeneous *** experimental results show that our scheme improves the accuracy by about 5%while keeping the complexity *** can find that our scheme converges more smoothly during training and adapts better in heterogeneous environments through numerical *** proposed double-compensation-based federated learning scheme is highly accurate,flexible in terms of participants and smooth the training *** it is deemed suitable for data privacy protection of smart wearable devices.

关键词： Social Internet of Things smart wearable devices data privacy asynchronous federated learning

Sensitive and selective molecularly imprinted electrochemical sensor based on multi-walled carbon nanotubes for doxycycline hyclate determination

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Chinese Chemical Letters 2020年第1期31卷 185-188页

作者： Zeyu Xu Xingxing Jiang Shuping Liu minghui yang Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety College of Chemistry and Chemical EngineeringCentral South University

An electrochemical sensor for doxycycline hyclate(DC)detection with high sensitivity and good selectivity is *** sensor was fabricated by electro-polymerization of molecularly imprinted polymers(MIPs)in the presence of DC onto multi-walled carbon nanotubes modified glassy carbon electrode(MWCNTs/GCE).The MWCNTs can significantly increase the current response of the sensor,leading to enhanced *** MIPs provide selective recognition sites for DC *** experimental parameters,such as the polymer monomer concentration,supporting electrolyte pH,the time for electro-polymerization and the incubation time of the sensor with DC were *** optimized experimental conditions,the sensor displayed a linear range of 0.05μmol/L-0.5μmol/L towards DC detection,with the detection limit of 1.3×10^-2μmol/*** sensor was successfully applied for recovery test of DC in human serum samples.

关键词： Electrochemical sensor Doxcycline hyclate Molecularly imprinted polymers Multi-walled carbon nanotubes Electro-polymerization

The Chang 7 member of the upper Triassic in the southwest Ordos Basin:Carbon isotope studay of dispersed organic matter and its paleoclimate significance

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Petroleum Science 2008年第1期5卷 20-23页

作者： yang minghui Liu Chiyang Tang Xuan Zheng Xiaofeng Basin ＆ Reservoir Research Center Key Laboratory of Hydrocarbon Accumulation Ministry of Education ChinaUniversity of Petroleum Beijing 102249 China Department of Geology Northwest University Xi＇an 710069 Shaanxi China Department of Energy Geology China University of Geosciences Beijing 100083 China

The carbon isotope δ 13C value of dispersed organic matter in the Upper Triassic sediments in the Ordos basin is （-24.5 to -26.6） ×10^-3 with the carbon being derived from C3-1ike pleustons. The paleoclimate of the Late Triassic, especially during the deposition of the Chang 7 member, was characterized by a hot and humid climate. It underwent four small climate cycles from humid and warm to humid and hot.

关键词： Paleoclimate stable carbon isotope dispersed organic material Yanchang Formation Ordos basin

One stone two birds:Vanadium doping as dual roles in self-reduced Pt clusters and accelerated water splitting

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Journal of Energy Chemistry 2022年第3期31卷 493-501,I0014页

作者： Yihan Feng Zichuang Li Shanlin Li minghui yang Ruguang Ma Jiacheng Wang State Key Laboratory of High-Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201ZhejiangChina

Integrating active Pt clusters into transition-metal oxides with water-dissociation ability is effective to prepare a bifunctional electrocatalyst for water splitting in ***,the additional utilization of a reductant and/or the operation at the elevating temperature causes the over-growth and agglomeration of Pt clusters,thus losing the high catalytic ***,we report that V dopant not only favors self-reducing Pt clusters on Ni Fe layered double hydroxide(LDH)(Pt/NiFeV)at room temperature,but also regulates interfacial charge redistribution to enhance the water-splitting *** and theoretical studies reveal that V dopant into Ni Fe LDH triggers more electrons to transfer to adjacent Fe atoms,thus leading to a higher reducing ability compared to that without *** used as water-splitting electrocatalyst,V doping promotes electron loss of Pt clusters in Pt/Ni Fe V,optimizing the free energy of hydrogen adsorption and proton recombination kinetics at the ***,it also moves the d-band center of Ni away from the Fermi level to optimize the adsorption of*OH intermediates and facilitate the desorption of oxygen molecules at the ***,Pt/Ni Fe V exhibits much higher bifunctional performance than V-free Pt/Ni Fe LDH toward both the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER).This work can spark inspiration of designing other bifunctional electrocatalysts for energy conversion and storage.

关键词： V doping Self-reduction Interfacial charge redistribution Water splitting DFT calculation

Sequence framework of two different kinds of margins and their response to tectonic activity during the Middle-Late Triassic,Ordos Basin

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Science China Earth Sciences 2007年第z2期50卷 203-216页

作者： yang minghui LIU Chiyang ZHENG MengLin LAN ChaoLi TANG Xuan Key Laboratory for Hydrocarbon Accumulation of Education Ministry in China University of Petroleum Basin and Reservoir Research CenterChina University of PetroleumBeijing 102249China State Key Laboratory of Continental Dynamics(Northwest University) Xi'an710069China Exploration&Production Research Institute SINOPECBeijing 100083China School of Engineering of Oil&Gas China University of PetroleumBeijing 102249China School of Energy China University of GeosciencesBeijing 100083China

Two kinds of margin respectively occur in the Ordos Basin during the Middle-Late Triassic(Yanchang Age),one is foreland margin developed under the background of flexural subsidence by thrusting intensively in the southwest margin,and the other is intracratonic basin margin by stable subsidence in northern and central parts of the *** Middle-Late Triassic Yanchang Formation can be divided into four regional third-order sequences,which are separated by gentle angular unconformity or regional erosion surface,made up of lowstand system tract(LST),expanding system tract(EST)and highstand system tract(HST)from lower to upper within a *** there are distinct differences of the sequence framework between the southwest margin and northern and central parts of the *** southwest margin develops heavy conglomerate layer and unconformity as a result of orogeny by thrusting,and the intracratonic basin margin by stable subsidence in the northern and central parts grows aggradational sandstone,conglomerate in fluvio-delta system and parallel *** depositional framework of southwest margin reflects the tectonic evolution from flexural subsidence by thrusting to rebounded *** formation of sequence boundary is related to the resilient uplift and *** sequence stratigraphic framework and depositional system tract configuration in the foreland basin are controlled by structural activity of the fold and thrust belt,and the sequence succession reflects episodic thrusting of the Middle-Late Triassic toward the foreland *** sequence evolution in northern and central parts reflects the depositional succession of fluvio-delta system under intracratonic background,composed of coarse-grained sediment in braided channel deposit at the lower,meandering channel deposit in the middle and fine-grained sediment in the flood plain at the upper,dominated by lake level *** the deposit of the LST in the intracraton basin,accommodation spa

关键词： sequence architecture tectonic response basement structure the Middle-Late Triassic(Yanchang Age) Ordos Basin

Latest Triassic to Early Jurassic Thrusting and Exhumation in the Southern Ordos Basin, North China: Evidence from LA-ICP-MS-based Apatite Fission Track Thermochronology

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Acta Geologica Sinica(English Edition) 2018年第4期92卷 1334-1348页

作者： ZHANG Shaohua LIU Chiyang yang minghui BAI Jianke WANG Jianqiang State Key Laboratory of Continental Dynamics Department of Geology Northwest University State Key Laboratory of Petroleum Resource and Prospecting College of Geosciences China University of Petroleum Research Center of Orogenic Geology Xi'an Center of Geological SurveyChina Geological Survey

The contractional structures in the southern Ordos Basin recorded critical evidence for the interaction between Ordos Basin and Qinling Orogenic Collage. In this study, we performed apatite fission track （AFT） thermochronology to unravel the timing of thrusting and exhumation for the Laolongshan-Shengrenqiao Fault （LSF） in the southern Ordos Basin. The AFT ages from opposite sides of the LSF reveal a significant latest Triassic to Early Jurassic time-temperature discontinuity across this structure. Thermal modeling reveals at the latest Triassic to Early Jurassic, a ~50~C difference in temperature between opposite sides of the LSF currently exposed at the surface. This discontinuity is best interpreted by an episode of thrusting and exhumation of the LSF with -1.7 km of net vertical displacement during the latest Triassic to Early Jurassic. These results, when combined with earlier thermochronological studies, stratigraphic contact relationship and tectono-sedimentary evolution, suggest that the southern Ordos Basin experienced coeval intense tectonic contraction and developed a north-vergent fold-and-thrust belt. Moreover, the southern Ordos Basin experienced a multi-stage differential exhumation during Mesozoic, including the latest Triassic to Early Jurassic and Late Jurassic to earliest Cretaceous thrust-driven exhumation as well as the Late Cretaceous overall exhumation. Specifically, the two thrust-driven exhumation events were related to tectonic stress propagation derived from the latest Triassic to Early Jurassic continued compression from Qinling Orogenic Collage and the Late Jurassic to earliest Cretaceous intracontinental orogeny of QinUng Orogenic Collage, respectively. By contrast, the Late Cretaceous overall exhumation event was related to the collision of an exotic terrain with the eastern margin of continental China at -100 Ma.

关键词： fission track thermochronology thermal history modeling thrusting and exhumation Ordos Basin Qinling Orogenic Collage