In the present paper, we consider a kind of semi-Markov risk model （SMRM） with constant interest force and heavy-tailed claims~ in which the claim rates and sizes are conditionally independent, both fluctuating acco...In the present paper, we consider a kind of semi-Markov risk model （SMRM） with constant interest force and heavy-tailed claims~ in which the claim rates and sizes are conditionally independent, both fluctuating according to the state of the risk business. First, we derive a matrix integro-differential equation satisfied by the survival probabilities. Second, we analyze the asymptotic behaviors of ruin probabilities in a two-state SMRM with special claim amounts. It is shown that the asymptotic behaviors of ruin probabilities depend only on the state 2 with heavy-tailed claim amounts, not on the state 1 with exponential claim sizes.展开更多
Analyses different interest rate risks, presents a new model for assessment of interest rates and thereby establishes the framework for control of interest
In this paper, we examine further annuity-due risk model presented by Cai （Probability in the Engineering and Informational Sciences, 16（2002）, 309-324）. We consider the computation for the distribution of duratio...In this paper, we examine further annuity-due risk model presented by Cai （Probability in the Engineering and Informational Sciences, 16（2002）, 309-324）. We consider the computation for the distribution of duration of first negative surplus and the algorithm is shown for calculating probability that ruin occurs and the duration of first negative surplus takes any nonnegative integers values. Numerical illustration for the main result is given.展开更多
In this article, the risk process perturbed by diffusion under interest force is considered, the continuity and twice continuous differentiability for Фδ（u,w） are discussed,the Feller expression and the integro-di...In this article, the risk process perturbed by diffusion under interest force is considered, the continuity and twice continuous differentiability for Фδ（u,w） are discussed,the Feller expression and the integro-differential equation satisfied by Фδ （u ,w） are derived. Finally, the decomposition of Фδ（u,w） is discussed, and some properties of each decomposed part of Фδ（u,w） are obtained. The results can be reduced to some ones in Gerber and Landry＇s,Tsai and Willmot＇s, and Wang＇s works by letting parameter δ and （or） a be zero.展开更多
Monetary policies, either actual or perceived, cause changes in monetary interest rates. These changes impact the economy through financial institutions, which react to changes in the monetary rates with changes in th...Monetary policies, either actual or perceived, cause changes in monetary interest rates. These changes impact the economy through financial institutions, which react to changes in the monetary rates with changes in their administered rates, on both deposits and lendings. The dynamics of administered bank interest rates in response to changes in money market rates is essential to examine the impact of monetary policies on the economy. Chong et al. (2006) proposed an error correction model to study such impact, using data previous to the recent financial crisis. In this paper we examine the validity of the model in the recent time period, characterized by very low monetary rates. The current state of close-to-zero monetary rates is of particular relevance, as it has never been studied before. Our main contribution is a novel, more parsimonious, model and a predictive performance assessment methodology, which allows comparing it with the error correction model.展开更多
Regarding KMV model identification credit risk profile of small and medium-sized listed companies, at present, domestic scholars has made some achievements in the process of the KMV model combined with China’s nation...Regarding KMV model identification credit risk profile of small and medium-sized listed companies, at present, domestic scholars has made some achievements in the process of the KMV model combined with China’s national conditions. In this paper, we will amend the model by using uncertain interest rate instead of fixed rate on the basis of existing research. Comparing the uncertain KMV model to traditional KMV model with ST-listed companies and non-ST-listed companies in Shanghai and Shenzhen stock exchange, we find that it performs slightly better as a predictor in uncertain KMV model and in out of sample forecasts.展开更多
为准确度量碳市场风险,利率与碳价之间的相依性纳入考虑范围。选取有代表性的区域试点及全国碳市场的碳价数据,并结合银行间同业拆放利率数据进行分析。首先,利用ARMA-GARCH(Auto-regressive and moving average-generalized autoregres...为准确度量碳市场风险,利率与碳价之间的相依性纳入考虑范围。选取有代表性的区域试点及全国碳市场的碳价数据,并结合银行间同业拆放利率数据进行分析。首先,利用ARMA-GARCH(Auto-regressive and moving average-generalized autoregressive conditional heteroskedasticity)模型对碳价和利率2个风险因子的边缘分布进行拟合,在此基础上,分别采用历史模拟法、蒙特卡罗模拟法、正态模拟法和极值分布法,计算未考虑碳价与利率相依性的碳市场单一风险VaR(Value at risk)。为全面评估碳市场风险,进一步地构建Copula-VaR模型,测度考虑碳价与利率相依性的碳市场集成风险。通过研究发现:碳市场集成风险具有区域异质性,风险由大到小排序为:北京、天津、全国、广东、湖北、深圳。此外,将集成风险与碳市场单一风险VaR进行对比分析,发现忽视碳价格与利率的相依性将导致风险高估。展开更多
In China,a more strict approval system has been introduced against urban stock land use alteration,but the uncertainty of this system,due to its unclear statement on disposition,restraints and profit sharing,makes lan...In China,a more strict approval system has been introduced against urban stock land use alteration,but the uncertainty of this system,due to its unclear statement on disposition,restraints and profit sharing,makes landuse alteration come along with risks of return loss of state-owned real property,recycling of stock land,imbalance of interest sharing,embezzlement of public land and pollution of industrial land. Causes of risks are directly linked to behaviors and decisions of major interest holders. In this paper,those causes are studied through the analysis of interest game between local governments,original land users,and property developers. The prevention and control of those risks requires balance of interest between interest holders to make possible multiple parties' engagement and interest sharing.展开更多
A model was proposed for addressing investment risk of the flee reserve in the form of credit or currency risk. This risk was expressed by a constant amount K （ e. g., securitization） upon an interest-increasing eve...A model was proposed for addressing investment risk of the flee reserve in the form of credit or currency risk. This risk was expressed by a constant amount K （ e. g., securitization） upon an interest-increasing event and a random variable Z representing the recovery rate of a bond or a devaluation factor. The model equation is an integro-differential equation with deviating arguments. The analytical solutions were obtained for the probability of survival as Z is a discrete random variable and as Z is a continuous random variable respectively.展开更多
基金supported by the National Natural Science Foundation of China(11101451)Ph.D.Programs Foundation of Ministry of Education of China(20110191110033)
文摘In the present paper, we consider a kind of semi-Markov risk model （SMRM） with constant interest force and heavy-tailed claims~ in which the claim rates and sizes are conditionally independent, both fluctuating according to the state of the risk business. First, we derive a matrix integro-differential equation satisfied by the survival probabilities. Second, we analyze the asymptotic behaviors of ruin probabilities in a two-state SMRM with special claim amounts. It is shown that the asymptotic behaviors of ruin probabilities depend only on the state 2 with heavy-tailed claim amounts, not on the state 1 with exponential claim sizes.
文摘Analyses different interest rate risks, presents a new model for assessment of interest rates and thereby establishes the framework for control of interest
基金The NNSF (10671072) of China"Shu Guang" project (04SG27) of Shanghai Municipal Education CommissionShanghai Education Development Foundation
文摘In this paper, we examine further annuity-due risk model presented by Cai （Probability in the Engineering and Informational Sciences, 16（2002）, 309-324）. We consider the computation for the distribution of duration of first negative surplus and the algorithm is shown for calculating probability that ruin occurs and the duration of first negative surplus takes any nonnegative integers values. Numerical illustration for the main result is given.
文摘In this article, the risk process perturbed by diffusion under interest force is considered, the continuity and twice continuous differentiability for Фδ（u,w） are discussed,the Feller expression and the integro-differential equation satisfied by Фδ （u ,w） are derived. Finally, the decomposition of Фδ（u,w） is discussed, and some properties of each decomposed part of Фδ（u,w） are obtained. The results can be reduced to some ones in Gerber and Landry＇s,Tsai and Willmot＇s, and Wang＇s works by letting parameter δ and （or） a be zero.
文摘Monetary policies, either actual or perceived, cause changes in monetary interest rates. These changes impact the economy through financial institutions, which react to changes in the monetary rates with changes in their administered rates, on both deposits and lendings. The dynamics of administered bank interest rates in response to changes in money market rates is essential to examine the impact of monetary policies on the economy. Chong et al. (2006) proposed an error correction model to study such impact, using data previous to the recent financial crisis. In this paper we examine the validity of the model in the recent time period, characterized by very low monetary rates. The current state of close-to-zero monetary rates is of particular relevance, as it has never been studied before. Our main contribution is a novel, more parsimonious, model and a predictive performance assessment methodology, which allows comparing it with the error correction model.
文摘Regarding KMV model identification credit risk profile of small and medium-sized listed companies, at present, domestic scholars has made some achievements in the process of the KMV model combined with China’s national conditions. In this paper, we will amend the model by using uncertain interest rate instead of fixed rate on the basis of existing research. Comparing the uncertain KMV model to traditional KMV model with ST-listed companies and non-ST-listed companies in Shanghai and Shenzhen stock exchange, we find that it performs slightly better as a predictor in uncertain KMV model and in out of sample forecasts.
文摘为准确度量碳市场风险,利率与碳价之间的相依性纳入考虑范围。选取有代表性的区域试点及全国碳市场的碳价数据,并结合银行间同业拆放利率数据进行分析。首先,利用ARMA-GARCH(Auto-regressive and moving average-generalized autoregressive conditional heteroskedasticity)模型对碳价和利率2个风险因子的边缘分布进行拟合,在此基础上,分别采用历史模拟法、蒙特卡罗模拟法、正态模拟法和极值分布法,计算未考虑碳价与利率相依性的碳市场单一风险VaR(Value at risk)。为全面评估碳市场风险,进一步地构建Copula-VaR模型,测度考虑碳价与利率相依性的碳市场集成风险。通过研究发现:碳市场集成风险具有区域异质性,风险由大到小排序为:北京、天津、全国、广东、湖北、深圳。此外,将集成风险与碳市场单一风险VaR进行对比分析,发现忽视碳价格与利率的相依性将导致风险高估。
基金the preliminary achievements of the social science key research projects of Anhui Province:research on Risks of Urban Stock Land use Alteration(No:SK2014A212)the preliminary achievements of open subjects of the Center for Urban Management Research of Anhui Jianzhu University:research on Risks of Urban Stock Land use Alteration
文摘In China,a more strict approval system has been introduced against urban stock land use alteration,but the uncertainty of this system,due to its unclear statement on disposition,restraints and profit sharing,makes landuse alteration come along with risks of return loss of state-owned real property,recycling of stock land,imbalance of interest sharing,embezzlement of public land and pollution of industrial land. Causes of risks are directly linked to behaviors and decisions of major interest holders. In this paper,those causes are studied through the analysis of interest game between local governments,original land users,and property developers. The prevention and control of those risks requires balance of interest between interest holders to make possible multiple parties' engagement and interest sharing.
基金Project supported by National Natural Science Foundation of China （Grant Nos. 10471088, 60572126）
文摘A model was proposed for addressing investment risk of the flee reserve in the form of credit or currency risk. This risk was expressed by a constant amount K （ e. g., securitization） upon an interest-increasing event and a random variable Z representing the recovery rate of a bond or a devaluation factor. The model equation is an integro-differential equation with deviating arguments. The analytical solutions were obtained for the probability of survival as Z is a discrete random variable and as Z is a continuous random variable respectively.
