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Application of Multifocusing Method for an Irregular Topography Imaging

Journal of China University of Geosciences 2005年第3期16卷 256-261页

作者： Luo Yinhe liu jiangping Yao Yao Institute of Geophysics ＆ Geomatics China University of Geosciences Wuhan 430074 China

A stack of records becomes one of the main steps in modern seismic data processing. In the stack procedure, the crucial operation is time correction. Conventional methods, e.g. , normal moveout （NMO） and dip moveout （DMO） stacks require a sufficiently accurate macro-velocity model, whereas a multifocusing imaging method does not depend on a macro-velocity model. The multifocusing method proposed by Gelchinsky et al. belongs to a group of methods that can be characterized as macro-model-independent imaging methods. The multifocusing method represents a transformation of 2-D multicoverage reflection data into a simulated zero-offset stack profile. This transformation is based on a completely data-derived spatial stacking operator, and includes stacking large supergathers of seismic traces, each of which can span many CMP gathers. By extending the multifocusing moveout formula to explicitly account for non-zero elevations of the source and receiver, the multifocusing imaging method can yield appropriate results when seismic data are acquired over an irregular topography. In recent years, many applications of multifocusing imaging over an irregular topography have demonstrated its advantages in comparison with conventional CMP processing. This paper illustrates the corresponding formulas for a synthetic data example modeled by the wave equation finite difference method. The result of the synthetic example is very encouraging. By stacking large supergathers and applying multifocusing moveout correction, the reflectors are aligned very well and the S/N is greatly improved. We have also applied multifocusing imaging over an irregular topography to a real data example. The elevation of the data acquisition area varies considerably. Applying multifocusing imaging, a substantial improvement of the simulated section was achieved, compared with a conventional CMP stacked section.

关键词： time correction multifocusing imaging topography

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Frequency-Domain Full-Waveform Inversion Based on Tunnel Space Seismic Data

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Engineering 2022年第11期18卷 197-206页

作者： Mingyu Yu Fei Cheng jiangping liu Daicheng Peng Zhijian Tian Hubei Subsurface Multiscale Imaging Key Laboratory(SMIL) Institute of Geophysics and GeomaticsChina University of GeosciencesWuhan 430074China Hubei Key Laboratory of Marine Geological Resources China University of GeosciencesWuhan 430074China

Tunnel seismic detection methods are effective for obtaining the geological structure around the tunnel face,which is critical for safe construction and disaster mitigation in tunnel ***,there is often a lack of accuracy in the acquired geological information and physical properties ahead of the tunnel face in the current tunnel seismic detection ***,we apply a frequency-domain acoustic full-waveform inversion(FWI)method to obtain high-resolution results for the tunnel *** discuss the influence of the frequency group selection strategy and the tunnel observation system settings regarding the inversion results and determine the structural imaging and physical property parameter inversion of abnormal geological bodies ahead of the tunnel *** on the conventional strategies of frequency-domain acoustic FWI,we propose a frequency group selection strategy that combines a low-frequency selection covering the vertical wavenumber and a high-frequency selection of *** strategy can effectively obtain the spatial structure and physical parameters of the geology ahead of the tunnel face and improve the inversion *** addition,by linearly increasing the side length of the tunnel observation system,we share the influence of the length of the two sides of the observation systems of different tunnels on the inversion *** found out that the inversion results are the best when the side length is approximately five times the width of the tunnel face,and the influence of increasing the side observation length beyond this range on the inversion results can be ***,based on this approach,we invert for the complex multi-stratum model,and an accurate structure and physical property parameters of the complex stratum ahead of the tunnel face are obtained,which verifies the feasibility of the proposed method.

关键词： Tunnel seismic detection Full-waveform inversion Frequency select strategy Observation system

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Influence of columnar grain boundary on fracture behavior of as-cast fully lamellar Ti-46Al-0.5W-0.5Si alloy

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China Foundry 2012年第1期9卷 64-68页

作者： Chen Hui Su Yanqing Luo Liangshun Li Xinzhong liu jiangping Guo Jingjie Fu Hengzhi School of Material Science and Engineering Harbin Institute of Technology Harbin 150001 China College of Electromechanical Engineering Northeast Forestry University Harbin 150040 China

The fracture behavior of fully lamellar γ-TiAl alloys depends on the angle between the lamellar orientation and loading axis,but the role of the presentation of grain boundary cannot be *** investigate the influence of the grain boundary on the initiation and propagation of cracks,the tensile test of the alloy was conducted at room temperature with loading axis parallel and perpendicular to the lamellar orientation,*** cracks adjacent to the fracture zone of the tensile specimens have been investigated to analyze the fracture *** show that the grain boundary has dual influences on the fracture *** the loading axis is parallel to the lamellar orientation,cracks are preferentially initiated at and propagate along the grain *** the loading axis is perpendicular to the lamellar orientation,the grain boundaries can prevent the propagation of cracks from running ***,serrated-shape grain boundaries have a better inhibiting effect on the propagation of cracks than planar boundaries.

关键词： γ-TiAl alloy full lamellar grain boundary fracture behavior

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Research on the optimization strategy of customers’electricity consumption based on big data

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Global Energy Interconnection 2023年第3期6卷 273-284页

作者： jiangping liu Zong Wang Hui Hu Shaoxiang Xu Jiabin Wang Ying liu Hubei Electric Power Exchange Center Limited Company Wuhan 430070P.R.China School of Economics and Management North China Electric Power UniversityBeijing 102206P.R.China

Current power systems face significant challenges in supporting large-scale access to new energy sources,and the potential of existing flexible resources needs to be fully explored from the power supply,grid,and customer *** paper proposes a multi-objective electricity consumption optimization strategy considering the correlation between equipment and electricity *** constructs a multi-objective electricity consumption optimization model that considers the correlation between equipment and electricity consumption to maximize economy and *** results show that the proposed method can accurately assess the potential for electricity consumption optimization and obtain an optimal multi-objective electricity consumption strategy based on customers’actual electricity consumption demand.

关键词： Big data Electricity consumption optimization Load elasticity Electricity consumption relevance

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天然地震数值模拟与实例对比

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地球科学（中国地质大学学报） 2014年第12期39卷 1783-1792页

作者：柳浩刘江平中国地质大学地球物理与空间信息学院湖北武汉430074

为了解决长时间正演模拟的不稳定性问题,实现天然地震波场长时间数值模拟.在高阶有限差分数值模拟的基础上,给出了多轴向完全匹配吸收边界(M-PML)二维划分方式,讨论了M-PML吸收边界转换系数P的取值对其吸收能力与截断误差对数值模拟有... 详细信息

为了解决长时间正演模拟的不稳定性问题,实现天然地震波场长时间数值模拟.在高阶有限差分数值模拟的基础上,给出了多轴向完全匹配吸收边界(M-PML)二维划分方式,讨论了M-PML吸收边界转换系数P的取值对其吸收能力与截断误差对数值模拟有效信号的影响.实现了二维弹性波高阶有限差分的长时间数值模拟.采用2013年12月16日湖北省巴东县地震及余震信息,对该地震数据进行了数值模拟,并与武汉、秭归两台站数据进行了分析和讨论,验证该正演模拟方法的正确性和有效性.为天然地震波场传播规律、成像和震相识别及震源定位等研究提供了基础.

关键词：多轴向完全匹配吸收边界高阶交错网格有限差分地震台站天然地震

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售价受新鲜度影响的产品运输方式选择与供应链渠道协调

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计算机集成制造系统 2018年第1期24卷 272-280页

作者：刘江坪张荣刘斌上海海事大学经济管理学院上海201306 上海海事大学物流研究中心上海201306

针对供应商和零售商组成的二级生鲜供应链,基于"一带一路"背景和一类售价受新鲜度影响的产品供应链,分别考察集中模式和分散模式下该类产品不同运输方式下的定价决策与渠道协调优化问题。研究发现:铁路运输方式下的最优售价比海运运输... 详细信息

针对供应商和零售商组成的二级生鲜供应链,基于"一带一路"背景和一类售价受新鲜度影响的产品供应链,分别考察集中模式和分散模式下该类产品不同运输方式下的定价决策与渠道协调优化问题。研究发现:铁路运输方式下的最优售价比海运运输方式下的售价高,供应链成员的利润主要受新鲜度敏感性和运输成本共同影响,并得到了不同条件下的运输策略;利润分享契约在一定条件下可以协调海运运输下的分散供应链;当政府给予铁路运输补贴时,补助较小反而会损害供应链成员,特许经营权契约可以用于渠道协调并有助于零售商选择铁路运输。

关键词：一带一路供应链生鲜产品价格弹性价格策略政府补助

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Power Purchase Model of Provincial Grids Based on Diverse Energy Coordination Hedging Optimization

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Journal of Power and Energy Engineering 2014年第4期2卷 463-469页

作者： Dunnan liu Yujie Xu Weimin Zeng jiangping liu Min Fan Xinming liu School of Economics and Management North China Electric Power University Beijing China Hubei Provincial Electric Power Company Power Exchange Center Wuhan China

Under the background of energy conservation, the grid companies should give priority to consumptive hydropower, wind power and other clean electricity to fulfill their social responsibility and promote the carbon emission reduction in power industry. But under the current power purchase mode, grid companies must first perform the contract. This is extremely uneconomical and not environmentally friendly. Based on hedging theory, this paper proposes a power purchase optimization model using the strategy of “compression and compensation”. If outer price is lower than the contract price, the grid can compress contract power appropriately, leaving more space for purchasing electricity;if outer price is not attractive enough, the grid should timely improve contract proportion, compensating the deviations of contract caused by "compression". Based on the strategy of "compression and compensation", it can effectively reduce the abandoned wind and water, enhance the economic and social benefits of provincial power grid.

关键词： Power Purchase Optimization Hedging "Compression and Compensation" Large-Scale System Decomposition-Coordination

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A Study on the Agricultural Scientific Research Management in the New Situation

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Asian Agricultural Research 2017年第9期9卷 22-23,27页

作者： Ximei SONG Xuelian SANG jiangping liu Jiaying CHEN Key Laboratory of Tropical Fruit Biology Ministry of Agriculture/South Subtropical Crops Research InstituteChinese Academy of Tropical Agricultural Sciences

As the core of the management of agricultural institutes,scientific research management plays a vital role in strategic development,and also affects the strategic development of agricultural research institutes. This paper expounds the connotation and characteristics of agricultural scientific research management as well as management ability requirements of management personnel. This paper puts forward the recommendations for improving agricultural scientific research management from the view of management personnel.

关键词： Agricultural scientific research management Management personnel Recommendations

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Cyclometalated Ir（Ⅲ） chaperone complexes of curcumin as light-activated prodrugs for cancer therapy

Cyclometalated Ir（Ⅲ） chaperone complexes of curcumin as l...

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第十一届全国化学生物学学术会议

作者： jiangping liu Liangnian Ji Hui Chao MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of ChemistrySun Yat-sen University

Curcumin has been widely reported as potential anticancer candidate drugs that can inhibit the clonogenicity of cancer cells and induce anti-proliferative and apoptotic effects on drug-resistant cancer cells. However, the clinical trials involving curcumin is hurdled by its poor bioavailability. To tackle this issue, herein we present a novel series of cyclometalated Ir（III） complexes that incorporate the advantages of Ir（III） metal complexes with curcumin serving as light-activatable prodrugs. Current results indicated that the combination of curcumin with Ir（II） chaperone complexes was an effective way in promoting bioavailability, and imparted the complexes with photo-induced curcumin release property. Intriguingly, the post-activation Ir（III） complexes were meanwhile endowed with photosensitizing capability. Thus, we can realize dual modes（chemotherapy and PDT） of cancer therapy by a photocage manner. Further evaluations on the photo-induced chemotherapy are in progress. We hope that by this study we can fully document the photo-activation mechanism and cytotoxicity profiles of the Ir（III） complexes, and assess the potential of these complexes as prodrugs for cancer therapy.

关键词： Iridium complex photoactived chemotherapy mitochondria

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The Development of GABA-containing Neurons in the Broca’s Area of Human Fetus

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解剖学报 1989年第2期 164-164页

作者： Hunan Medical University liu jiangping Zheng Deshu

Prenatal development of GABA-containingneurons in the Broca’s area of human fetusranging in age from 17 weeks to full-termnewborn infant were studied by means ofGABA *** GABA-con-taining neurons were found in margin... 详细信息

关键词： Broca cortical marginal infant gestational newborn fetus somewhat laminar uneven

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