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On redundancy-modified NAND multiplexing

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Journal of Systems Engineering and Electronics 2018年第4期29卷 864-872页

作者： diao ming YU Lianhua CHEN Xiaobo College of Information and Communication Engineering Harbin Engineering University College of Automation Harbin Engineering University

In order to make systems that are based on unreliable components reliable, the design of fault tolerant architectures will be necessary. Inspired by von Neumann＇s negative AND（NAND）multiplexing and William＇s interwoven redundant logic, this paper presents a fault tolerant technique based on redundancy-modified NAND gates for future nanocomputers. Bifurcation theory is used to analyze fault tolerant ability of the system and the simulation results show that the new system has a much higher fault tolerant ability than the conventional multiplexing based on NAND *** to the evaluation, the proposed architecture can tolerate a device error rate of up to 10-1, with multiple redundant components. This fault tolerant technique is potentially useful for future nanoelectronics.

关键词： fault tolerant multiplexing redundancy-modified neg-ative AND (NAND) gate

Nitrogen application levels based on critical nitrogen absorption regulate processing tomatoes productivity, nitrogen uptake, nitrate distributions, and root growth in Xinjiang, China

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Journal of Arid Land 2023年第10期15卷 1231-1244页

作者： JING Bo SHI Wenjuan diao ming Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization of Xinjiang Production and Construction Corps Department of HorticultureAgricultural CollegeShihezi UniversityShihezi 832003China State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China Xi'an University of TechnologyXi'an 710048China

The unreasonable nitrogen(N)supply and low productivity are the main factors restricting the sustainable development of processing *** addition,the mechanism by which the N application strategy affects root growth and nitrate distributions in processing tomatoes remains *** this study,we applied four N application levels to a field(including 0(N0),200(N200),300(N300),and 400(N400)kg/hm^(2))based on the critical N absorption ratio at each growth stage(planting stage to flowering stage:22%;fruit setting stage:24%;red ripening stage:45%;and maturity stage:9%).The results indicated that N300 treatment significantly improved the aboveground dry matter(DM),yield,N uptake,and nitrogen use efficiency(NUE),while N400 treatment increased nitrate nitrogen(NO_(3)^(-)-N)residue in the 20–60 cm soil *** variations of total root dry weight(TRDW)and total root length(TRL)showed a single-peak ***,N300 treatment improved the secondary root parameter of TRDW,while N400 treatment improved the secondary root parameter of *** grey correlation coefficients indicated that root dry weight density(RDWD)in the surface soil(0–20 cm)had the strongest relationship with yield,whereas root length density(RLD)in the middle soil(20–40 cm)had a strong relationship with *** path model indicated that N uptake is a crucial factor affecting aboveground DM,TRDW,and *** above results indicate that N application levels based on critical N absorption improve the production of processing tomatoes by regulating N uptake and root ***,the results of this study provide a theoretical basis for precise N management.

关键词： critical N absorption nitrogen use efficiency(NUE) beta model total root dry weight(TRDW) root growth processing tomato

Antenna Selection and Power Allocation Design for 5G Massive MIMO Uplink Networks

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China Communications 2019年第4期16卷 1-15页

作者： Hongyuan Gao Yumeng Su Shibo Zhang ming diao College of Information and Communication Engineering Harbin Engineering University

Massive MIMO is one of the key technologies in future 5G communications which can satisfy the requirement of high speed and large capacity. This paper considers antenna selection and power allocation design to promote energy conservation then provide good quality of service(QoS) for the whole massive MIMO uplink network. Unlike previous related works, hardware impairment, transmission efficiency, and energy consumption at the circuit and antennas are involved in massive MIMO networks. In order to ensure the QoS, we consider the minimum rate constraint for each user and the system, which increases the complexity of power allocation problem for maximizing energy and spectral efficiency in massive MIMO system. To this end, a quantum-inspired social emotional optimization(QSEO) algorithm is proposed to obtain the optimal power control strategy in massive MIMO uplink networks. Simulation results assess the great advantages of QSEO which previous strategies do not have.

关键词： 5G massive MIMO antenna selection power allocation quantum-inspiredsocial emotional optimization

Signal Detection Algorithm Design Based on Stochastic Resonance Technology Under Low Signal-to-Noise Ratio

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Journal of Shanghai Jiaotong university(Science) 2019年第3期24卷 328-334页

作者： JIANG Xiaolin diao ming QU Susu Harbin Engineering University Harbin 150001China Heilongjiang University of Science and Technology Harbin 150027China

In the current 4th generation(4G)communication network,the base station with the same frequency transmission makes a serious interference among adjacent cells,and information transmission is susceptible to interference such as channel multipath fading and occlusion *** effectively spectrum signal under low signal-to-noise ratio(SNR),directly affects the whole performance of the wireless communication network *** paper designs an energy signal detection algorithm based on stochastic resonance technology which transforms noise's signal energy into useful signal energy,and improves output *** energy signal detection algorithm realizes the function of providing effective detection of signal under low SNR,and promotes the performance of the whole communication system.

关键词： 4G communication network stochastic resonance signal detection algorithm

Fault Detection and Recovery for Full Range of Hydrogen Sensor Based on Relevance Vector Machine

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Journal of Harbin Institute of Technology(New Series) 2015年第6期22卷 37-44页

作者： Kai Song Bing Wang ming diao Hongquan Zhang Zhenyu Zhang School of Electrical Engineering and Automation Harbin Institute of Technology College of Information and Communication Engineering Harbin Engineering University Chinese Electron Science and Technology Conglomerate 49th Research Institute College of Automation Harbin Engineering University No.703 Research Institute of China Shipbuilding Industry Corporation

In order to improve the reliability of hydrogen sensor,a novel strategy for full range of hydrogen sensor fault detection and recovery is proposed in this paper. Three kinds of sensors are integrated to realize the measurement for full range of hydrogen concentration based on relevance vector machine( RVM). Failure detection of hydrogen sensor is carried out by using the variance detection method. When a sensor fault is detected,the other fault-free sensors can recover the fault data in real-time by using RVM predictor accounting for the relevance of sensor data. Analysis,together with both simulated and experimental results,a full-range hydrogen detection and hydrogen sensor self-validating experiment is presented to demonstrate that the proposed strategy is superior at accuracy and runtime compared with the conventional methods. Results show that the proposed methodology provides a better solution to the full range of hydrogen detection and the reliability improvement of hydrogen sensor.

关键词： hydrogen concentration measurement full range fault detection fault recovery relevance vector machine

Experimental study of the dissipation of supersaturated TDG during the jet breakup process

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Journal of Hydrodynamics 2019年第4期31卷 760-766页

作者： Hong-cheng Xue Qian Ma Ran Li ming-jun diao David Z. Zhu Jing-ying Lu State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University Chengdu 610065 China Southwest Hydraulic Institute for Waterways Chongqing Jiaotong University Chongqing 400016 China Department of Civil and Environmental Engineering University of Alberta Edmonton Canada

Elevated levels of the total dissolved gas (TDG) may occur downstream the dams during the spill process to increase the incidence of the gas bubble disease for fish. With increasing numbers of cascade hydropower stations being constructed or planned, the cumulative effects of the TDG supersaturation become an increasingly prominent issue. Previous studies of the supersaturated TDG mainly focused on the generation process in the stilling basin downstream the dam while ignoring the saturation changes during the jet breakup process by assuming a 100% plunge-in-level. This assumption may lead to errors in the TDG generation predictions and the scientific assessments of the TDG supersaturation. Therefore, in this paper, physical experiments are conducted to analyze the dissipation of the supersaturated TDG in the jet breakup process, and to establish a quantitative relation between the initial TDG level and the detention time of the jet in the air. These results indicate how the supersaturated TDG generated by an upstream dam affects the TDG generation and provide a scientific support for accurate predictions of the supersaturated TDG generation for high dam spills.

关键词： Jet breakup total dissolved gas (TDG) supersaturation high dam initial saturation dissipation

NUMERICAL SIMULATION OF 3-D FLOW FIELD IN ARCIFORM PLUNGE POOL

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Journal of Hydrodynamics 2002年第3期14卷 106-110页

作者： Xu, Wei-Lin Liu, Shan-Jun Wang, Wei Qu, Jing-Xue diao, ming-Jun Hydraulics Lab. of High Speed Flows Sichuan Univ. Chengdu 610065 China

The 3-D complex turbulent flow fields in a plunge pool with arciform bottom are simulated by using the k-Ε model in body-fitted coordinates. The calculated results reveal the flow characteristics in the arciform plunge pool under the different flood discharge conditions, which can not be easily obtained in the physical model test because the measurement of the complex velocity is very difficult. The calculated flow fields are helpful to understand the hydraulic characteristics of plunge pool deeply. The calculated and the measured pressure distributions on the pool bottom are compared and in good agreement.

关键词： Computer simulation Flood control Flow of fluids Pressure distribution Three dimensional

EXPERIMENTAL INVESTIGATION OF EMERGENCY GATE SHUTTING FOR ORIFICE TUNNEL

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Journal of Hydrodynamics 2002年第3期14卷 29-34页

作者： Wang, Wei Yang, Yong-Quan Xu, Wen-Lin Liu, Shan-Jun diao, ming-Jun Zhang, Jian-Min Hydraulics Lab. of High Speed Flows Sichuan Univ. Chengdu 610065 China

In the process of the emergence gate shutting of one orifice tunnel, a big noise and great vibration may be observed in the mid gate chamber. In order to guarantee the working safety of orifice tunnels, an experimental investigation is carried out in Sichuan University. In the investigation, the fluctuation pressure along the tunnel and the wind velocity in the entry of emergency gate are measured. In the mean time, the fluid state in orifice tunnel is carefully observed and analyzed. The reasons of the noise and vibration in the mid gate chamber are found out and some countermeasures are presented in this paper. The conclusions are useful to the orifice tunnels with high water head and huge discharge.

关键词： Pressure measurement Tunnels Velocity Vibrations (mechanical) Wind

HYDRODYNAMIC UPLIFT FORCE AND STABILITY OF ARCIFORM PLUNGE POOL

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Journal of Hydrodynamics 2002年第3期14卷 8-12页

作者： Xu, Wei-Lin Wang, Wei Liu, Shan-Jun Qu, Jing-Xue diao, ming-Jun Hydraulics Lab. of High Speed Flows Sichuan Univ. Chengdu 610065 China

Compared with general trapeziform plunge pools, an arciform plunge pool has its advantages, e.g. less excavate quantity, higher stability, etc. In this paper, the hydrodynamic pressure distribution on the soleplate of the arciform plunge pool is measured under a relatively dangerous condition of operation. The result is helpful to the design of the arciform plunge pool. The result also shows that the difference between the maximum and the minimum pressures on the upward surface of the soleplate may cause an additional uplift force on the soleplate under certain condition and should be taken into consideration in the uplift force calculation of the soleplate. The scour experiment verifies the higher stability of the arciform plunge pool.

关键词： Energy dissipators Hydrodynamics Pressure distribution Pressure measurement Stability Uplift pressure