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Measuring Financial Systemic Risk:Net Liability Clearing Mechanism and Contagion Effect

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Journal of Systems Science & Complexity 2024年第3期37卷 1114-1146页

作者： MA Jiali ZHU Shushang LI Duan college of Big Data Statistics Guizhou University of Finance and EconomicsGuiyang 550025China School of Business Sun Yat-Sen UniversityGuangzhou 510275China School of Data Science City University of Hong KongHong Kong 999077China

Following the framework of E-N model(Eisenberg and Noe,2001),the authors consider a new clearing mechanism based on net liabilities among financial institutions since the liabilities between the counterparties should be deducted accordingly when clearing in *** the basis for systemic risk measurement,similar to the original E-N model,the authors first establish some good properties for the clearing payment vector according to a more general ***,the authors investigate how risk spreads among institutions through the liability network forming the risk contagion ***,the authors illustrate with a specific example that the original E-N clearing mechanism may misidentify the systemic important institutions,and theoretically show that it may also overestimate the risk compared with the netting clearing mechanism.

关键词： Clearing mechanism contagion net liability network systemic risk

Residual Operator of Type-2 Triangular Norms on Convex Normal Upper Semi-Continuous Fuzzy Truth Values

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Journal of Mathematical Research with Applications 2024年第3期44卷 285-290页

作者： Xinxing WU Shuangfeng LUO Zhiyi ZHU Lidong WANG School of Mathematics and Statistics Guizhou University of Finance and Economics School of Sciences Southwest Petroleum University Zhuhai college of Science and Technology

Based on the residual implication of continuous triangular norms, we obtain the expression of residual operator for extended operators(type-2 triangular norms) of continuous triangular norms on convex normal upper sem... 详细信息

关键词： type-2 fuzzy set triangular norm (t-norm) residual operator

Group Decision-Making Method of Entry Policy During a Pandemic

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Tsinghua Science and Technology 2024年第1期29卷 56-65页

作者： Chunsheng Cui Baiqiu Li Xianfeng Chen college of Computer and Information Engineering Henan University of Economics and LawZhengzhou 450046China Tourism college Beijing Union UniversityBeijing 100101China

Omicron,the new mutant coronavirus,has spread rapidly globally,attracting close attention from different stakeholders *** complex and constantly changing epidemic situation has had a new impact on the ***,this paper focuses on the characteristics of the rapid spread of the COVID-19 variant ***,epidemic prevention experts conduct preliminary screening as part of the existing epidemic plan database according to the current local situation,after which they sort the alternatives deemed more suitable for the *** the decision-makers identify the most divergent expert group,plan for consultation and adjustments,and finally obtain the plan with the smallest *** article aims to integrate the experts'opinions with the method of minimizing the differences,which can maximize the expert consensus and help organize the schemes that best meet the epidemic *** experts'negotiation and iteration of the differences in the initial plan align with the current complex and dynamic epidemic situation and are of great significance to the rapid formulation of plans to achieve effective prevention and control.

关键词： epidemic prevention and control group decision-making alternative ranking control policy

Analysis of the Impact of Service Trade on Economic Development of guangdong Province

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科教导刊 2015年第9期 149-150页

作者：黄丽霞 huashang college guangdong university of finance and economics

Service trade is an important part of international *** the late of twentieth Century,the international transfer of service industry for international service trade with the rapid development of information technology gradually spread in the world,which has become a new hot spot in the current international *** is important to promote the development of trade in services for guangdong Province,actively attract Multi-National Corporation investment in the service industry,to undertake international service outsourcing,and vigorously promote the imports and exports of service industry,to promote the transformation of trade structure adjustment and growth mode.

关键词： Service Trade Economic Development Influence

Research on Sales Strategy Based on Supermarket Pipeline Data

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Journal of Data Analysis and Information Processing 2020年第3期8卷 99-109页

作者： Shaoyong Hong Chun Yang Hongwei Wen huashang college Guangdong University of Finance & Economics Guangzhou China

“Low profit and high sales” is a strategy to increase sales volume by reducing the profit of unit goods, so that businesses can gain more profits. For flexible goods, price reduction can increase the total revenue, but when the goods are lack of flexibility, price reduction will reduce the total revenue. In this paper, according to the sales data provided by a supermarket, we preprocess the data, establish appropriate indicators to measure the daily discount strength of the mall, and establish a mathematical model between the discount strength, sales and profit margin. Through these models, we found that meager profits do bring up sales, but too low discounts can also hurt total profits. In addition, when shopping malls implement discount promotions, they will also bring some negative effects, and we give some suggestions for this.

关键词： Low Profit and High Sales Profit Margin Discount Rate Price Elasticity of Demand

Continuous Dependence for the Linear Differential Equations of Thermo-Diffusion

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Journal of Applied Mathematics and Physics 2020年第7期8卷 1291-1303页

作者： Jincheng Shi huashang college guangdong university of finance & economics Guangzhou China

In this paper, we establish the structural stability for the linear differential equations of thermo-diffusion in a semi-infinite pipe flow. Using the technology of a second-order differential inequality, we prove the continuous dependence on the density ρ and the coefficient of thermal conductivity K. These results show that small changes for these coefficients can’t cause tremendous changes for the solutions.

关键词： Differential Equations of Thermo-Diffusion Structural Stability Continuous Dependence

EXISTENCE OF WEAK SOLUTIONS FOR SOME SINGULAR PARABOLIC EQUATION

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Acta Mathematica Scientia 2016年第6期36卷 1651-1661页

作者：夏莉李敬娜刘强 college of Mathematics and Statistics Guangdong University of Economics and Finance Department of Mathematics Jinan University college of Mathematics and Computational Science Shenzhen University

In this paper, we are concerned with a singular parabolic equation subject to Dirichlet boundary condition and initial condition. Under different assumptions on μ, v and ψ, some existence results are obtained by app... 详细信息

关键词： existence singular equation blowup

OPTIMAL PRICING AND INVENTORY POLICY WITH ORDER CANCELATIONS UNDER THE CASH-ON-DELIVERY PAYMENT SCHEME

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Journal of Systems Science & Complexity 2014年第5期27卷 970-992页

作者： ZHANG Jie NIU Baozhuang LI Jianbin School of Business Administration Guangdong University of Finance and Economics Lingnan college Sun Yat-sen University School of Management Huazhong University of Science and Technology

Considering a periodic review system where the online seller allows the customers to pay when the products are delivered to them(referred as cash-on-delivery payment scheme in this paper),the authors investigate the seller's joint pricing and inventory control policy with a finite planning *** particular,the authors incorporate the customers' possible order cancellation behavior with the cash-on-delivery *** can be proven that the base-stock list price policy is optimal under mild *** authors also analyze the impact of the customers' forward looking behavior on the optimal policy.

关键词： Cash-on-delivery customer behavior dynamic programming joint price and inventory decisions

ON ALGEBRAIC SOLUTIONS OF THE SECOND-ORDER COMPLEX DIFFERENTIAL EQUATIONS WITH ENTIRE ALGEBRAIC ELEMENT COEFFICIENTS

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Acta Mathematica Scientia 2016年第3期36卷 733-739页

作者：孔荫莹郭晓晶孙道椿 School of Mathematics and Statistics Guangdong University of Finance and Economics Sontan college Guangzhou University School of Mathematics Science South China Normal University

The main purpose of this paper is to study the problems on the existence of algebraic solutions for some second-order complex differential equations with entire algebraic function element coeifficients. Several theorems on the existence of solutions are obtained, which perfect the solution theory of linear complex differential equations.

关键词： complex differential equations entire algebraic function elements algebraic solutions