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Huile Li,Tianyu Wang,Huan Yan 국제구조공학회 2023 Smart Structures and Systems, An International Jou Vol.31 No.5
Dynamic irregularity and acceleration of bridges subjected to high-speed trains provide crucial information for comprehensive evaluation of the health state of under-track structures. This paper proposes a novel approach for real-time estimation of vertical track dynamic irregularity and bridge acceleration using deep generative adversarial network (GAN) and vibration data from in-service train. The vehicle-body and bogie acceleration responses are correlated with the two target variables by modeling train-bridge interaction (TBI) through least squares generative adversarial network (LSGAN). To realize supervised learning required in the present task, the conventional LSGAN is modified by implementing new loss function and linear activation function. The proposed approach can offer pointwise and accurate estimates of track dynamic irregularity and bridge acceleration, allowing frequent inspection of high-speed railway (HSR) bridges in an economical way. Thanks to its applicability in scenarios of high noise level and critical resonance condition, the proposed approach has a promising prospect in engineering applications.
Huiling Li,Yuhong Li,Rui He 연세대학교의과대학 2015 Yonsei medical journal Vol.56 No.3
Purpose: This study examined the sparing effect of sufentanil on the median effectiveconcentration (EC50) of epidural ropivacaine in elderly patients undergoing elective transurethral resection of prostate (TURP). Materials and Methods: This was a prospective randomized double-blind dose-response study. Fifty eight elderlypatients with American Society of Anesthesiologists physical status I‒II who were scheduled for TURP surgery under epidural anesthesia were randomly allocatedto a group receiving 15 mL of ropivacaine (group R) or a group receiving ropivacaine plus 5 μg of sufentanil (group RS). The concentration of ropivacaine was determined by a Dixon’s up-and-down sequential allocation. The first participantreceived 0.3% of ropivacaine in both groups and subsequent concentrations were determined by the response of the previous patient in the same group. The EC50 of epidural ropivacaine was analyzed using the Dixon and Massey method. Results: The EC50 of ropivacaine during TURP surgery was 0.186% (95% confidenceinterval, 0.173‒0.200%) in group R, and 0.136% (95% confidence interval, 0.127‒0.144%) in group RS (p<0.01). No differences in Bromage scale of motor block examination and the onset time of sensory block were observed. Conclusion:Administration of 5 μg of epidural sufentanil caused a 37% reduction in the EC50 of epidural ropivacaine in elderly patients who underwent TURP surgery. Thus, sufentanil addition during surgery of TURP can decrease the dose of ropivacaineanesthesia required.
A Novel Nonlinear Optimization Coverage Algorithm in Wireless Sensor Networks
Huiling Peng,Zeyu Sun,Yuanbo Li 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.7
Maximize coverage and prolong the network lifetime for wireless sensor networks has become one of the key topics of research. For this, put forward a kind of node scheduling strategy based on covering algorithm. The algorithm by Poisson distribution model structure node density formula, according to the node density formula in the monitoring region deploying to effective coverage; On the other hand, through the node state scheduling mechanism updates as well as to the neighbor node, can be made of residual energy of nodes and monitoring the area sensor the node energy consumption balance, so as to prolong the network lifetime goal. The simulation results show that, the algorithm cans not only useless nodes completely too effective coverage, improve the coverage while optimizing the cyber source configuration, prolong the network lifetime.
Interfacial Diffusion Behavior in Ni-BaTiO3 MLCCs with Ultra-Thin Active Layers
Huiling Gong,Xiaohui Wang,Zhibin Tian,Hui Zhang,Longtu Li 대한금속·재료학회 2014 ELECTRONIC MATERIALS LETTERS Vol.10 No.2
The interfacial structure and diffusion behavior between the dielectric layers (BaTiO3) and internal electrode layers (Ni) in X5R-type multilayer ceramic capacitors (MLCCs, from −55°C to 85°C, at a temperature capacitance coefficient within ±15%) with ultra-thin active layers (T = 1 - 3 μm) have been investigated by several microstructural techniques (SEM/TEM/HRTEM) with energy-dispersive x-ray spectroscopy (EDS). In the MLCC samples with different active layer thicknesses (1 - 3 μm), weak interfacial diffusion was observed between BaTiO3 and Ni. It was also found that the diffusion capability of Ni into the BaTiO3 layer was stronger than that of BaTiO3 to the Ni electrode, which indicated that the diffusion of Ni was the dominant factor for the interfacial diffusion behavior in the ultra-thin layered MLCCs. The mechanism of Ni diffusion is discussed in this study as well.
Effective Following Patterns Mining Scheme for the Movements of Objects
Li Chen,Lianggui Liu,Bingxian Chen,Huiling Jia,Yu Zhang 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.6
Technological advances of location aware devices allow us to locate and track the moving objects accurately and in more complex environments. In order to derive valuable knowledge embedded in data from databases, many domestic and foreign scholars have done a lot of work. In this paper, we review the progress of patterns mining mainly in frequent pattern, periodic pattern and following pattern. And we provide a general perspective for studies on different patterns mining by reviewing and comparing the methods and algorithms in detail, providing a quick understanding of research to the worker and giving effective following patterns mining scheme for the movements of objects. The study on patterns mining in movements not only has a direct bearing on human life but also play an important part in environment protection, traffic and transportation, privacy and security and so on. So, the rest of this paper will present these specific applications and analyzed it in theory.
Mass transfer and kinetics study on the sulfite forced oxidation with manganese ion catalyst
Zhao Bo,Li Yan,Zhuo Yuqun,Tong Huiling,Zhang Xiaowen,Chen Changhe 한국화학공학회 2007 Korean Journal of Chemical Engineering Vol.24 No.3
limestone scrubbing is the most common flue gas desulfurization process (FGD) for control of sulfurdioxide emissions from the combustion of fossil fuels. Forced oxidation, which controls the overall reaction of the sulfurdioxide absorption, is the key path of the process. Manganese which comes from the coal is one of the catalysts duringthe forced oxidation process. In the present work, the two-film theory was used to analyze the sulfite forced oxidationreaction with an image boundary recognition technique, and the oxidation rate was experimentally studied by contactingpure oxygen with a sodium sulfite solution. There was a critical sulfite concentration 0.328 mol/Lwithout catalyst ortion constant k; furthermore, we obtained the order with respect to the sulfite and Mn2+ concentrations. When the Mn2+catalyst concentration was kept unchanged, the sulfite oxidation reaction rate was controlled by dual film and the reac-tion kinetics was first order with respect to sulfite while concentration was below 0.328 mol/L; the sulfite oxidationreaction rate was controlled by gas film only and the reaction kinetics was zero order with respect to sulfite while concentration over 0.328 mol/L. When concentration was kept unchanged, the sulfite oxidation reaction rate de-pended on gas-liquid mass transfer and the reaction kinetics was diferent in various stages with respect to Mn2+ con-centrations.