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AI,SME Financing,and Bank Digitalization

China Economic Transition 2022年第2期5卷 210-241页

作者： ZHANG Yilin YU Yunjun chen zhuming Lingnan College Institute of NSEISGand Advanced Institute of FinanceSun Yat-sen UniversityGuangzhou 510275China School of Finance Southwestern University of Finance and EconomicsChengdu 611130China School of Business Sun Yat-sen UniversityGuangzhou 510275China

With the development of digital technology,the way that banks serve small-and medium-sized enterprises(SMEs)has undergone a disruptive change.Besides labor-intensive ways,banks can now serve SMEs through technologyintensive ways such as big data and artificial intelligence(AI).This has given rise to internet banks and made traditional banks face the choice of digitalization,thus igniting the technological competition in the banking sector.This paper builds a competition model among three types of banks,including small and medium internet banks with unique data advantages,large banks with economies of scale,and regional small and medium banks with comparative advantages in acquiring internal information.Then,the paper studies the digitalization strategies of different types of banks and their influence on the financing options of SMEs.The model shows that there may be a digital matching relationship between banks and SMEs in the era of AI.Large banks and small and medium internet banks have the advantage in the research and development and application of digital loan technology and serve SMEs with a more digital footprint.Regional small and medium banks have an advantage in traditional loan means and serve SMEs with a less digital footprint.This paper suggests that banks choose the transformation direction and development orientation according to their own conditions,such as bank scale,data accumulation,and internal information screening capability because this affects not only the development of banks and but also the extent to which AI can improve the financing environment for SMEs.These conclusions not only provide a theoretical basis for the decision-making mechanism of bank digitalization strategy and the applicability of AI to different types of banks but also have important policy implications for the government to better promote the digital transformation of banks and alleviate the financing constraints for SMEs.

关键词： artificial intelligence big data digital transformation bank competition

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A Method on Non-Linear Correction of Broadband LFMCW Signal Utilizing Its Relative Sweep Non-Linear Error

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Journal of Systems Engineering and Electronics 2001年第1期12卷 70-74页

作者： chen zhuming Ding Yiyuan & Xiang Jingcheng Dept. of Electronic Engineering, UEST, chengdu 610054, P. R. China Dept. of Electronic Engineering UEST Chengdu 610054 P. R. China

This paper presents a method on non-linear correction of broadband LFMCW signal utilizing its relative nonlinear error. The deriving procedure and the results simulated by a computer and tested by a practical system are also introduced. The method has two obvious advantages compared with the previous methods: (1) Correction has no relation with delay time td and sweep bandwidth B; (2) The inherent non-linear error of VCO has no influence on the correction and its last results.

关键词： Computer simulation Control nonlinearities Error correction Frequency modulation Signal processing Variable frequency oscillators

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Gasification of iron coke and cogasification behavior of iron coke and coke under simulated hydrogen-rich blast furnace condition

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International Journal of Minerals,Metallurgy and Materials 2022年第10期29卷 1839-1850页

作者： Kai Zhu zhuming chen Shuixin Ye Shuhua Geng Yuwen Zhang Xionggang Lu State Key Laboratory of Advanced Special Steel&Shanghai Key Laboratory of Advanced Ferrometallurgy&School of Materials Science and Engineering Shanghai UniversityShanghai 200444China

To explore the iron coke application in hydrogen-rich blast furnace,which is an effective method to achieve the purpose of low carbon emissions,the initial gasification temperature of iron coke in CO_(2) and H_(2)O atmosphere and its cogasification reaction mechanism with coke were systematically studied.Iron coke was prepared under laboratory conditions,with a 0-7wt%iron ore powder addition.The properties of iron cokes were tested by coke reactivity index(CRI)and coke strength after reaction(CSR),and their phases and morphology were evolution discussed by scanning electron microscopy and X-ray diffraction analysis.The results indicated that the initial gasification temperature of iron coke decreased with the increase in the iron ore powder content under the CO_(2) and H_(2)O_((g))atmosphere.In the 40vol%H_(2)O+60vol%CO_(2) atmosphere,CRI of iron coke with the addition of 3wt%iron ore powder reached 58.7%,and its CSR reached 56.5%.Because of the catalytic action of iron,the reaction capacity of iron coke was greater than that of coke.As iron coke was preferentially gasified,the CRI and CSR of coke were reduced and increased,respectively,when iron coke and coke were cogasified.The results showed that the skeleton function of the coke can be protected by iron coke.

关键词： iron coke hydrogen-rich blast furnace coke gasification coke reactivity index coke strength after reaction

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Strategic interaction between institutional investors and supervision department:a theoretical analysis of low‑price collusion in SBIC

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Financial Innovation 2023年第1期9卷 1313-1348页

作者： Xin Li zhuming chen School of Economics Sichuan UniversityChengdu 610065China School of Business Sun Yat-sen UniversityGuangzhou 510275China

We introduce evolutionary game method to analyze low-price collusion in inquiry market of Sci-Tech Innovation Board of China(SIBC)from the perspective of strategic interaction between large institutional investors(LIIs),small and medium-sized institutional investors(SMIIs),and supervision department(SD).The results show that supervision behaviors of SD,and quotation behaviors of institutional investors,are subject to supervision conditions.Under the condition that benefits of tough supervision are lower a lot than minimum benefits of light supervision(light supervision condition),SD will choose light supervision and institutional investors will turn to illegal quotation in response.Finally,a steady-state equilibrium with low-price collusion will form in SIBC’s inquiry market even with a large supervision penalty for illegal quotation.On the contrary,under the condition that benefits of tough supervision are higher a lot than maximum benefits of light supervision(tough supervision condition)and with a large penalty for illegal quotation,SD and institutional investors will choose tough supervision and legal quotation.Further numerical simulations under light supervision condition show that:(1)High-price culling rule will become a booster for low-price collusion and accelerate SMIIs’evolutionary process to imitative quotation.(2)Blindly increasing penalties for illegal quotation or reducing the culling rate is not an appropriate approach to solve the problem of low-price collusion since it cannot shift supervision condition from light into tough and make SD supervise toughly.(3)Institutional investors’choices of quotation strategies are more volatile and highly susceptible to supervision behaviors of SD when facing exogenous uncertainty.Therefore,the keys to solving the problem of low-price collusion are shifting supervision condition from light into tough through increasing incremental benefits of tough supervision,and providing institutional investors with a stable and predictable supervision policy.In conclusion,

关键词： Sci-Tech Innovation Board of China Low-price collusion Supervision condition Tripartite evolutionary game

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INTERACTING MULTIPLE MODEL ALGORITHM BASED ON JOINT LIKELIHOOD ESTIMATION

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Journal of Electronics(China) 2011年第4期28卷 427-432页

作者： Sun Jie Jiang Chaoshu chen zhuming Zhang Wei School of Electronic Engineering University of Electronic Science and Technology of China Chengdu 611731 China Research Institute University of Electronic Science and Technology of China Chengdu 611731 China

A novel approach is proposed for the estimation of likelihood on Interacting Multiple-Model(IMM) filter.In this approach,the actual innovation,based on a mismatched model,can be formulated as sum of the theoretical innovation based on a matched model and the distance between matched and mismatched models,whose probability distributions are known.The joint likelihood of innovation sequence can be estimated by convolution of the two known probability density functions.The like-lihood of tracking models can be calculated by conditional probability formula.Compared with the conventional likelihood estimation method,the proposed method improves the estimation accuracy of likelihood and robustness of IMM,especially when maneuver occurs.

关键词： Maneuvering target tracking Multiple model Likelihood

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基于扩频多址的差转游标测距方法与应用

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电讯技术 2024年第4期64卷 627-631页

作者：刘庆元王佳钰史学威杨文波陈祝明电子科技大学长三角研究院(衢州) 浙江衢州324003

针对游标测距法在转发测距中无法实现多址测距的问题,提出了一种基于扩频多址的差转游标测距方法。该方法采用游标法实现高精度测距,采用直接序列扩频技术以正交的伪随机码(PN码)区分不同的测距信号,利用不同的差转频率区分不同的转发... 详细信息

针对游标测距法在转发测距中无法实现多址测距的问题,提出了一种基于扩频多址的差转游标测距方法。该方法采用游标法实现高精度测距,采用直接序列扩频技术以正交的伪随机码(PN码)区分不同的测距信号,利用不同的差转频率区分不同的转发信标。基于该方法构建了测距系统,系统的测距精度可达亚米级。转发信标使用电池供电和无线通信调度,结构简单,成本低,功耗小,安装简单。该系统非常适用于工业场景的人员定位管理。

关键词：多址测距脉冲测距游标法差频转发直接系列扩频(DSSS) 人员定位

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PRICING FOR CORPORATE PROPERTY RIGHTS TRANSFER WITH STOCHASTIC MARKETS

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Journal of Systems Science and Systems Engineering 2013年第1期22卷 52-72页

作者： zhuming chen Huali YANG Shunming ZHANG School of Business Sun Yat-sen University School of Business and Management Hong Kong University of Science and Technology China Financial Policy Research Center Renmin University of China

This paper employs the real option theory to develop a pricing model for the transfer of property rights.We list the conditions for the good,intermediate and bad firms respectively,and work out the closed-form solution to the equilibrium transfer price,the optimal transfer timing.Using the comparative static analysis,we find that for good firms the transfer price of the target is increasing in its capital.The higher the capital of the target owns,the faster it will be transferred.For intermediate and bad firms,similar conclusions can be derived.The larger gap between the acquirer＇s size and market power and those of the target,the lower the transfer triggered price.The transfer price goes up as the capital ratio of the acquirer over the target diminishes,while it is decreasing in the amount of the capital the target owns.

关键词： Real option asset pricing optimal timing

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Space-time clutter model for airborne bistatic radar with non-Gaussian statistics

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Journal of Systems Engineering and Electronics 2009年第2期20卷 283-290页

作者： Duan Rui Wang Xuegang Jiang Chaoshu chen zhuming Dept.of Electronic Engineering Univ. of Electronic Science and Technology of China Chengdu 610054 P. R. China

To validate the potential space-time adaptive processing （STAP） algorithms for airborne bistatic radar clutter suppression under nonstationary and non-Gaussian clutter environments, a statistically non-Gaussian, space-time clutter model in varying bistatic geometrical scenarios is presented. The inclusive effects of the model contain the range dependency of bistatic clutter spectrum and clutter power variation in range-angle cells. To capture them, a new approach to coordinate system conversion is initiated into formulating bistatic geometrical model, and the bistatic non-Gaussian amplitude clutter representation method based on a compound model is introduced. The veracity of the geometrical model is validated by using the bistatic configuration parameters of multi-channel airborne radar measurement （MCARM） experiment. And simulation results manifest that the proposed model can accurately shape the space-time clutter spectrum tied up with specific airborne bistatic radar scenario and can characterize the heterogeneity of clutter amplitude distribution in practical clutter environments.

关键词： airborne bistatic radar clutter model geometry non-Gaussian

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加料泵旁通阀PID自动控制系统

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自动化应用 2024年第7期65卷 100-102,111页

作者：简名辛子健王晶黄健胥国芳陈亮余攀卢润湖北中烟工业有限责任公司湖北武汉430040

作为烟丝生产工艺中的重要环节,添加香糖料可对烟丝质量起到关键性作用。为了保证生产中香糖料的流量控制精度,在加料管路中使用旁通阀PID自动控制。通过实际生产跟踪,加料泵旁通阀PID自动控制系统与电动调节针形阀的配合调控,使料液流... 详细信息

作为烟丝生产工艺中的重要环节,添加香糖料可对烟丝质量起到关键性作用。为了保证生产中香糖料的流量控制精度,在加料管路中使用旁通阀PID自动控制。通过实际生产跟踪,加料泵旁通阀PID自动控制系统与电动调节针形阀的配合调控,使料液流量具有更快速、灵敏的调控反应,提高了对加料环节的流量控制。

关键词：齿轮泵旁通阀电动调节针型阀 PID控制

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Support vector machine and ROC curves for modeling of aircraft fuel consumption

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Journal of Management Analytics 2015年第1期2卷 22-34页

作者： Xuhui Wang Xinfeng chen zhuming Bi China Academy of Civil Aviation Science and Technology CAACBeijing 100028China Department of Engineering Indiana University–Purdue University Fort WayneFort WayneIN 46805USA

To estimate the fuel consumption of a civil aircraft,we propose to use the receiver operating characteristic(ROC)curve to optimize a support vector machine(SVM)model.The new method and procedure has been developed to build,train,validate,and apply an SVM model.A conceptual support vector network is proposed to model fuel consumption,and the flight data collected from routes are used as the inputs to train an SVM model.During the training phase,an ROC curve is defined to evaluate the performance of the model.To validate the applicability of the trained model,a case study is developed to compare the data from an aircraft performance manual and from the implemented simulation model.The investigated aircraft in the case study is a Boeing 737-800 powered by CFM-56 engines.The comparison has shown that the trained SVM model from the proposed procedure is capable of representing a complex fuel consumption function accurately for all phases during the flight.The proposed methodology is generic,and can be extended to reliably model the fuel consumption of other types of aircraft,such as piston engine aircraft or turboprop engine aircraft.

关键词： support vector machine receiver operating characteristic(ROC)curve fuel consumption aviation regression model optimization

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