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Parking reservation techniques:A review of research topics,considerations,and optimization methods

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Journal of Traffic and Transportation Engineering(English Edition) 2023年第6期10卷 1099-1117页

作者： xinying zhang Kelly Pitera Yuanqing Wang Department of Transportation Engineering School of Transportation EngineeringChang'an UniversityXi'an 710064China Department of Civil and Environmental Engineering Norwegian University of Science and Technology(NTNU)Trondheim 7491Norway

Growing private vehicle use and a limited supply of parking resources have increased competition for parking *** searching for parking spaces is a significant barrier to smooth traffic *** technology-generated parking reservations are regarded as an excellent way to increase parking efficiency and lessen *** there is increased attention on smart parking research and parking reservation optimization,a scoping review is currently ***,the purpose of this paper is to provide a comprehensive review of the research literature related to parking *** of the original 438 publications identified in this search,99 were eventually chosen for *** review categorized parking reservations into four research topics:inventory control,allocation decisions,pricing strategies,and performance *** elements considered in these research themes,modeling techniques,and evaluation criteria are explored in *** addition,the challenges and further enhancements of parking reservation optimization are *** is believed that the findings from this study will be beneficial in further research on parking reservations.

关键词： Traffic engineering Parking reservation optimization Capacity control Allocation decision Dynamic pricing Performance evaluation

Adaptive synchronization of a class of chaotic systems via variable structure control

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Journal of Systems Engineering and Electronics 2005年第4期16卷 858-861,865页

作者： Li Huiguang zhang xinying Guan Xinping Inst. of Electrical Engineering Yanshan Univ. Qinhuangdao 066004 P. R. China

The synchronization problem under two cases is considered. One is that the bound on the uncertainty existing in the controller is known, the other is that the bound is unknown. In the latter case, the simple adaptation laws for upper bound on the norm of the uncertainty is proposed. Using this adaptive upper bound, a variable structure control is designed. The proposed method does not guarantee the convergence of the adaptive upper bound to the real one but makes the system asymptotically stable.

关键词： chaotic synchronization uncertainty variable structure control.

Synthesis of spirocyclopropylpyrazole derivatives via the cascade reaction of alkylidenecyclopropanes with pyrazolidinones and trifluoroethanol

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Organic Chemistry Frontiers 2022年第5期9卷 1410-1416页

作者： Mengyang Shen Yuanshuang Xu xinying zhang Xuesen Fan NMPA Key Laboratory for Research and Evaluation of Innovative Drug Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsKey Laboratory of Green Chemical Media and ReactionsMinistry of EducationSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiangHenan 453007China

A novel synthesis of spirocyclopropylpyrazole derivatives tethered with a trifluoromethyl unit through an unprecedented cascade reaction of alkylidenecyclopropanes with pyrazolidinones and trifluoroethanol(TFE)has bee... 详细信息

关键词： alkyl ethanol spiro

Synergistic effects of peroxydisulfate on UV/O_(3) process for tetracycline degradation:Mechanism and pathways

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Chinese Chemical Letters 2024年第10期35卷 408-413页

作者： Fengrui Yang Debing Wang xinying zhang Jie zhang Zhichao Wu Qiaoying Wang State Key Laboratory of Pollution Control and Resource Reuse Shanghai Institute of Pollution Control and Ecological SecuritySchool of Environmental Science and EngineeringTongji UniversityShanghai 200092China Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology College of Environment&Safety EngineeringFuzhou University.Fuzhou 350108China

Tetracycline(TC)as a typical emerging pollutant is becoming a serious threat to the environment and human health.A combined advanced oxidation technology of UV/Ozone(O_(3))/peroxydisulfate(PDS)process was developed to explore an efficient and economic treatment process of TC in ***,the reactive sites and transformation pathways of TC were explored and the toxicity of the intermediates was quantified with a quantitative structure-activity relationship(QSAR)*** degradation performance of TC was substantially enhanced in UV/O_(3)/PDS process with a kobsof 0.0949 min-1,which was 2.3 times higher than UV/O_(3)and 3.2 times than sole *** results demonstrated that there was a superior synergistic effect of PDS on UV/O_(3)processes for the degradation of *** paramagnetic resonance(EPR)analysis and quenching experiments show that·OH,SO_(4)·-,O_(2)·-and1O_(2)all contributed to TC degradation in the UV/O_(3)/PDS process and exhibited a synergistic effect,which inhibited the generation of harmful *** addition,the UV/O_(3)/PDS system can effectively degrade TC in a wide range of substrate concentrations and pH,and also showed excellent adaptability to various concentrations of anions(Cl-and HCO_(3)-).This study proves the feasibility of UV/O_(3)/PDS process for treating TC contaminated wastewater with complicated water matrix.

关键词： UV/ozonation/peroxydisulfate Synergistic effect Tetracycline Degradation Wastewater

Cobalt-Catalyzed Switchable[4+1]and[4+1+1]Spirocyclization of Aromatic Amides with 2-Diazo-1H-indene-1,3(2H)-dione:Access to Spiro Indene-2,1'-isoindolinones and Spiro Isochroman-3,1'-isoindolinones

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Chinese Journal of Chemistry 2024年第4期42卷 363-369页

作者： Bin Li Mengmeng Xie Jingyu Li Nana Shen xinying zhang Xuesen Fan State Key Laboratory of Antiviral Drugs Pingyuan LaboratoryKey Laboratory of Green Chemical Media and ReactionsKey Laboratory for Yellow River and Huai River Water Environmental Pollution ControlMinistry of EducationSchool of EnvironmentSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiangHenan453007 China

Herein,we report a condition-controlled divergent synthesis of spiro indene-2,1'-isoindolinones and spiro isochroman-3,1'-isoindolinones through cobalt-catalyzed formal[4+1]and[4+1+1]spirocyclization of aromatic amides with 2-diazo-1H-indene-1,3(2H)-*** the reaction is carried out under air in ethyl acetate,spiro indene-2,1'-isoindolinones are formed through Co(II)-catalyzed C—H/N—H[4+1]*** the reaction is run under O2 in CH3CN,on the other hand,spiro isochroman-3,1'-isoindolinones are generated through Baeyer-Villiger oxidation of the in situ formed spiro indene-2,1'-isoindolinones with O2 as a cheaper and environmental-friendly oxygen *** general,these protocols have advantages such as using non-precious and earth-abundant metal catalyst,no extra additive,high efficiency and regioselectivity.A gram-scale synthesis and the removal of the directing group further highlight its utility.

关键词： Spiro indene-2,1'-isoindolinones Spiro isochroman-3,1'-isoindolinones 3d Transition metals Cobalt-catalyzed C-H Activation Switchable[4+1]and[4+1+1]spirocyclization Aromatic amides 2-Diazo-1H-indene-1,3(2H)-dione

Characterization of particle size distribution of mainstream cigarette smoke generated by smoking machine with an electrical low pressure impactor

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Journal of Environmental Sciences 2014年第4期26卷 827-833页

作者： Xiang Li Haohui Kong xinying zhang Bin Peng Cong Nie Guanglin Shen Huimin Liu Key Laboratory of Tobacco Chemistry Zhengzhou Tobacco Research Institute of CNTC Technology Center Guangdong Branch of China Tobacco Industry Corporation

Cigarette smoking is a particle-related exposure. Studying the characteristics of the particle size distribution of cigarette smoke can aid in providing knowledge of smoke aerosol attributes. We used an electrical low pressure impactor （ELPI） to measure the particle size distribution of mainstream cigarette smoke generated by a smoking machine and provided a continuum of particle sizes of cigarette smoke from a whole cigarette. The results showed that the aerodynamic diameters （D, geometric mean of a channel） of particles ranged from 0.021 to 1.956 ~m, and the number concentrations were on the order of 105-109 cm-3 for different sizes of particles. The particle number of the size category below 0.1 p,m approximated that of the category 0.1-2.0 Ixm, and the particles in the size category of 0.1-2.0 μm contributed extremely heavily to total particulate mass. In addition, the results with small samples indicated that the tar yields normalized per milligram of nicotine showed an approximately linear increase with increasing concentration of total particles.

关键词： aerosol mainstream cigarette smoke particle size

Neuropeptide Y gene transfection inhibits post-epileptic hippocampal synaptic reconstruction

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Neural Regeneration Research 2013年第17期8卷 1597-1605页

作者： Fan zhang Wenqing Zhao Wenling Li Changzheng Dong xinying zhang Jiang Wu Na Li Chuandong Liang Graduate School Hebei Medical University Hebei General Hospital Department of Neurosurgery People's Hospital of Hebei Province

Exogenous neuropeptide Y has antiepileptic effects; however, the underlying mechanism and optimal administration method for neuropeptide Y are still unresolved. Previous studies have used intracerebroventricular injection of neuropeptide Y into animal models of epilepsy. In this study, a recombinant adeno-associated virus expression vector carrying the neuropeptide Y gene was injected into the lateral ventricle of rats, while the ipsilateral hippocampus was injected with kainic acid to establish the epileptic model. After transfection of neuropeptide Y gene, mossy fiber sprouting in the hippocampal CA3 region of epileptic rats was significantly suppressed, hippocampal synaptophysin （p38） mRNA and protein expression were inhibited, and epileptic seizures were reduced. These experimental findings indicate that a recombinant adeno-associated virus expression vector carrying the neuropeptide Y gene reduces mossy fiber sprouting and inhibits abnormal synaptophysin expression, thereby suppressing post-epileptic synaptic reconstruction.

关键词： neural regeneration gene therapy neural plasticity neurodegeneration recombinantadeno-associated virus vector neuropeptide Y epilepsy kainic acid synaptic remodeling mossyfiber sprouting hippocampus synaptophysin neuroregeneration

Active microphonics noise suppression based on DOB control in 166.6-MHz superconducting cavities for HEPS

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Radiation Detection Technology and Methods 2021年第1期5卷 153-160页

作者： Dongbing Li Qunyao Wang Pei zhang Zhenghui Mi xinying zhang Haiying Lin Institute of High Energy Physics(IHEP) Chinese Academy of Sciences(CAS)Beijing 100049China School of Nuclear Sciences and Technology University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Particle Acceleration Physics and Technology IHEPCASBeijing 100049China

Purpose Superconducting 166.6-MHz cavities will be used to accelerate electron beams in high-energy photon source(HEPS).The radio-frequency(RF)fields inside these cavities have to be controlled better than 0.03%(rms error)for the amplitude and 0.03◦(rms error)for the *** a quarter-wave geometry withβ=1,the 166.6-MHz cavity has two intrinsic mechanical modes at∼100Hz observed in both simulations and cryogenic *** coupled to external vibrations,these microphonics modes shall stress the existing proportional–integral(PI)feedback controller and inevitably deteriorate the field ***,additional noise suppression may be *** Adigital low-level RF system previously in-house developedwas connected to a 166.6-MHz dressed cavity at room temperature in the ***-tunerswere used to“knock”on the cavity at various frequencies to excite cavity vibrations,and microphonics spectrum was subsequently measured.A disturbance observer(DOB)-based algorithm was adopted and integrated into the existing feedback *** performance of PI controller,DOB controller and a combination of PI and DOB controller was *** limitation of the DOB controller was also *** and conclusions The PI controller was proved to be insufficient in suppressing large cavity microphonics during the *** adding the DOB controller,the excellent field stabilities can be *** loop parameters were *** simple first-order filter was adequate thanks to the robustness of the DOB *** constitutes a first laboratory demonstration of the active microphonics noise suppression in the 166.6-MHz RF cavity for HEPS.

关键词： Microphonics Disturbance observer Feedback loop Low-level RF Superconducting cavity High Energy Photon Source

Investigation of optimum discharge characteristics and chemical activity of AC driven air plasma jet and its anticancer effect

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Plasma Science and Technology 2021年第12期23卷 63-73页

作者： Sansan PENG Dehui XU Miao QI Rong LIU xinying zhang Huaiyan zhang Bolun PANG Jin zhang Hao zhang Zhijie LIU Dingxin LIU State Key Laboratory of Electrical Insulation and Power Equipment Centre for Plasma BiomedicineXi'an Jiaotong UniversityXi'an 710049People's Republic of China The School of Life Science and Technology Xi'an Jiaotong UniversityXi'an 710049People's Republic of China

In this study,we investigated the effects of the quartz tube diameter,air flow rate,and applied voltage on the characteristics of an air plasma jet to obtain the optimized discharge *** physicochemical properties and concentration of reactive oxygen and nitrogen species(RONS)in plasma-activated medium(PAM)were characterized to explore their chemical ***,we investigated the inactivation effect of air plasma jet on tumour cells and their corresponding inactivation *** results show that the tube diameter plays an important role in sustaining the voltage of the air plasma jet,and the gas flow rate affects the jet length and discharge ***,the air plasma jet discharge displays two modes,namely,ozone and nitrogen oxide modes at high and low gas flow rates,*** the voltage increases the concentration of reactive species and the length of *** evaluating the viability of A549 cells under different parameters,the optimal treatment conditions were determined to be a quartz tube diameter of 4 mm,gas flow rate of 0.5 SLM,and voltage of 18 k ***,an air plasma jet under the optimized conditions effectively enhanced the chemical activity in PAM and produced more aqueous *** air plasma jet induced significant cytotoxicity in A549 cancer cells after plasma treatment.H_(2)O_(2) and NO_(2) are regarded as key factors in promoting cell *** present study demonstrates the potential use of tumour cell therapy by atmospheric air PAM,which aids a better understanding of plasma liquid chemistry.

关键词： cold atmospheric plasma discharge characteristics reactive species plasma-activated medium anticancer effect