The Global Navigation Satellite System(GNSS)has been widely adopted in numerous fields,including intelligent transportation,remote sensing,and aeronautical and astronautical engineering.As new navigation approaches,te...The Global Navigation Satellite System(GNSS)has been widely adopted in numerous fields,including intelligent transportation,remote sensing,and aeronautical and astronautical engineering.As new navigation approaches,technologies,and applications continue to emerge,they attract significant global attention.Ensuring reliable positioning solutions with high accuracy,strong anti-interference capabilities,high availability and low integrity risks has become increasingly critical.展开更多
[Objectives]To investigate the effect of healthcare failure mode and effect analysis(HFMEA)on reducing error risk of neonatal parenteral nutrition solution dispensing.[Methods]A research team was established to identi...[Objectives]To investigate the effect of healthcare failure mode and effect analysis(HFMEA)on reducing error risk of neonatal parenteral nutrition solution dispensing.[Methods]A research team was established to identify the failure mode(FM)in each link of the formulation process of neonatal parenteral nutrition solution by HFMEA,quantify the severity(S),occurrence(O)and detection(D)of FM,and evaluate FM by risk priority number(RPN).For FM with the values of RPN>16,failure cause analysis was conducted,and corresponding improvement measures were formulated.The weight coefficient and random consistency ratio(CR)of deployment process were calculated in Matlab R2018a by compiling the Analytic Hierarchy Process(AHP)program.Six months after the implementation of improvement measures,the implementation effect was evaluated by comparing the changes of the values of RPN which was evaluated comprehensively and the rate of dispensing errors before and after the implementation of HFMEA.[Results]In the preparation process of neonatal parenteral nutrition solution,a total of 13 FMs with medium and above risk were found,the weight coefficient of medical order review,dosing and mixing was 0.2703,the weight coefficient of drug dispensing check and review was 0.1432,the weight coefficient of print label was 0.1015,the weight coefficient of distribution was 0.0716,and CR=0.0491<0.1.After six months of intervention,the total RPN value decreased by 64.81%from 127.8 to 45.0.The deployment error rates were significantly lower after the implementation,and the difference was statistically significant(P<0.05).[Conclusions]HFMEA can effectively reduce the error risk in preparation of neonatal parenteral nutrition solution,improve the quality of dispensing and promote the safety of neonatal medication.展开更多
为解决快速路高架路段大间距出口标志信息供需失衡问题,借助眼动追踪技术开展室内试验。设计77种不同标志,提取并分析28种眼动数据指标,从视认效率、难度、疲劳三个维度构建评价体系。运用重复测量方差分析与逼近理想解排序法(Technique...为解决快速路高架路段大间距出口标志信息供需失衡问题,借助眼动追踪技术开展室内试验。设计77种不同标志,提取并分析28种眼动数据指标,从视认效率、难度、疲劳三个维度构建评价体系。运用重复测量方差分析与逼近理想解排序法(Technique for Order Preference by Similarity to an Ideal Solution,TOPSIS),探究多信息标志多维视认特性。结果表明,28种眼动指标能有效评估驾驶员视认特性,精准表征视认微观特征。标志中路名数量越多,驾驶员视认效率越低、难度越大、疲劳程度越高,整体视认风险增加。建议标志信息数量一般不超过6条,特殊情况可扩展至9条。此外,目的路名在版面的位置对视认风险影响显著,应合理设置版面优先级。展开更多
This paper concerns an optimal dividend-penalty problem for the risk models with surplus-dependent premiums.The objective is to maximize the difference of the expected cumulative discounted dividend payments received ...This paper concerns an optimal dividend-penalty problem for the risk models with surplus-dependent premiums.The objective is to maximize the difference of the expected cumulative discounted dividend payments received until the moment of ruin and a discounted penalty payment taken at the moment of ruin.Since the value function may be not smooth enough to be the classical solution of the HJB equation,the viscosity solution is involved.The optimal value function can be characterized as the smallest viscosity supersolution of the HJB equation and the optimal dividend-penalty strategy has a band structure.Finally,some numerical examples with gamma distribution for the claims are analyzed.展开更多
Floor water inrush is one of the main types of coal mine water hazards.With the development of deep mining,the prediction and evaluation of floor water inrush is particularly significant.This paper proposes a variable...Floor water inrush is one of the main types of coal mine water hazards.With the development of deep mining,the prediction and evaluation of floor water inrush is particularly significant.This paper proposes a variable weight model,which combines a multi-factor interaction matrix(MFIM)and the technique for order performance by similarity to ideal solution(TOPSIS)to implement the risk assessment of floor water inrush in coal mines.Based on the MFIM,the interaction between seven evaluation indices,including the confined water pressure,water supply condition and aquifer water yield property,floor aquifuge thickness,fault water transmitting ability,fracture development degree,mining depth and thickness and their influence on floor water inrush were considered.After calculating the constant weights,the active degree evaluation was used to assign a variable weight to the indices.The values of the middle layer and final risk level were obtained by TOPSIS.The presented model was successfully applied in the 9901 working face in the Taoyang Mine and four additional coal mines and the results were highly consistent with the engineering situations.Compared with the existing nonlinear evaluation methods,the proposed model had advantages in terms of the weighting,principle explanation,and algorithm structure.展开更多
One day,can we foresee earthquakes? This question always comes back from every telluric disaster,and the seismology is well annoyed to answer it.The destructtion of the city of Kobe in Japan,on January 17th 1995,arous...One day,can we foresee earthquakes? This question always comes back from every telluric disaster,and the seismology is well annoyed to answer it.The destructtion of the city of Kobe in Japan,on January 17th 1995,aroused deep debates upon the research policy on earthquakes.This disaster obviously shows our well limited capacity to take up the challenge of the prediction of earthquakes because,finally,it is indeed in Japan where authorities invest most in展开更多
Using the focal mechanism solutions and slip distribution model data of the Taiwan Straits MS7.3 earthquake on September 16, 1994, we calculate the static Coulomb stress changes stemming from the earthquake. Based on ...Using the focal mechanism solutions and slip distribution model data of the Taiwan Straits MS7.3 earthquake on September 16, 1994, we calculate the static Coulomb stress changes stemming from the earthquake. Based on the distribution of aftershocks and stress field, as well as the location of historical earthquakes, we analyze the Coulomb stress change triggered by the Taiwan Straits MS7.3 earthquake. The result shows that the static Coulomb stress change obtained by forward modeling based on the slip distribution model is quite consistent with the location of aftershocks in the areas far away from the epicenter. Ninety percent of aftershocks occurred in the stress increased areas. The Coulomb stress change is not entirely consistent with the distribution of aftershocks near the epicenter. It is found that Coulomb stress change can better reflect the aftershock distribution far away from the epicenter, while such corresponding relationship becomes quite complex near the epicenter. Through the calculation of the Coulomb stress change, we find that the stress increases in the southwest part of the Min-Yue (Fujian-Guangdong) coastal fault zone, which enhances the seismic activity. Therefore, it is deemed that the sea area between Nanpeng Island and Dongshan Island, where the Min-Yue coastal fault zone intersects with the NW-trending Shanghang-Dongshan fault, has a high seismic risk.展开更多
This paper mainly studies the risk management of equity investment projects and the identification and evaluation of the main risks in each stage of investment. The main risk described is whether the project benefit c...This paper mainly studies the risk management of equity investment projects and the identification and evaluation of the main risks in each stage of investment. The main risk described is whether the project benefit can reach the expectation, and the deep-seated reasons lie in the risk of policy environment, industrial structure and market forecast. Therefore, we must attach great importance to the research on risk management and supervision system of equity investment projects, and constantly establish and improve the research on supervision system with risk assessment of major business decisions before investment, investigation of business management during investment and post-investment evaluation as the main line, so as to prevent problems before they happen.展开更多
In recent years, with the continuous development of China's economy, the credit business of commercial banks is also developing rapidly. However, with the rapid development of credit business, many problems are gr...In recent years, with the continuous development of China's economy, the credit business of commercial banks is also developing rapidly. However, with the rapid development of credit business, many problems are gradually exposed, and there are still some problems in credit risk management. The current risks in credit business restrict the development of commercial banks in China to a certain extent. Therefore, analyzing the problems faced by commercial banks in credit risk management and proposing corresponding solutions are not only beneficial to improving the quality of bank credit business, but also of great practical significance to the healthy development of commercial banks.展开更多
文摘The Global Navigation Satellite System(GNSS)has been widely adopted in numerous fields,including intelligent transportation,remote sensing,and aeronautical and astronautical engineering.As new navigation approaches,technologies,and applications continue to emerge,they attract significant global attention.Ensuring reliable positioning solutions with high accuracy,strong anti-interference capabilities,high availability and low integrity risks has become increasingly critical.
基金Young Scholar Program of Hebei Pharmaceutical Association Hospital Pharmaceutical Research Project(2020—Hbsyxhqn0029)Science and Technology Research and Development Project of Chengde City,Hebei Province(201706A043).
文摘[Objectives]To investigate the effect of healthcare failure mode and effect analysis(HFMEA)on reducing error risk of neonatal parenteral nutrition solution dispensing.[Methods]A research team was established to identify the failure mode(FM)in each link of the formulation process of neonatal parenteral nutrition solution by HFMEA,quantify the severity(S),occurrence(O)and detection(D)of FM,and evaluate FM by risk priority number(RPN).For FM with the values of RPN>16,failure cause analysis was conducted,and corresponding improvement measures were formulated.The weight coefficient and random consistency ratio(CR)of deployment process were calculated in Matlab R2018a by compiling the Analytic Hierarchy Process(AHP)program.Six months after the implementation of improvement measures,the implementation effect was evaluated by comparing the changes of the values of RPN which was evaluated comprehensively and the rate of dispensing errors before and after the implementation of HFMEA.[Results]In the preparation process of neonatal parenteral nutrition solution,a total of 13 FMs with medium and above risk were found,the weight coefficient of medical order review,dosing and mixing was 0.2703,the weight coefficient of drug dispensing check and review was 0.1432,the weight coefficient of print label was 0.1015,the weight coefficient of distribution was 0.0716,and CR=0.0491<0.1.After six months of intervention,the total RPN value decreased by 64.81%from 127.8 to 45.0.The deployment error rates were significantly lower after the implementation,and the difference was statistically significant(P<0.05).[Conclusions]HFMEA can effectively reduce the error risk in preparation of neonatal parenteral nutrition solution,improve the quality of dispensing and promote the safety of neonatal medication.
文摘为解决快速路高架路段大间距出口标志信息供需失衡问题,借助眼动追踪技术开展室内试验。设计77种不同标志,提取并分析28种眼动数据指标,从视认效率、难度、疲劳三个维度构建评价体系。运用重复测量方差分析与逼近理想解排序法(Technique for Order Preference by Similarity to an Ideal Solution,TOPSIS),探究多信息标志多维视认特性。结果表明,28种眼动指标能有效评估驾驶员视认特性,精准表征视认微观特征。标志中路名数量越多,驾驶员视认效率越低、难度越大、疲劳程度越高,整体视认风险增加。建议标志信息数量一般不超过6条,特殊情况可扩展至9条。此外,目的路名在版面的位置对视认风险影响显著,应合理设置版面优先级。
基金supported by National Natural Science Foundation of China(11471218)Hebei Higher School Science and Technology Research Projects(ZD20131017)Joint Doctoral Training Foundation of HEBUT(2018GN0001)。
文摘This paper concerns an optimal dividend-penalty problem for the risk models with surplus-dependent premiums.The objective is to maximize the difference of the expected cumulative discounted dividend payments received until the moment of ruin and a discounted penalty payment taken at the moment of ruin.Since the value function may be not smooth enough to be the classical solution of the HJB equation,the viscosity solution is involved.The optimal value function can be characterized as the smallest viscosity supersolution of the HJB equation and the optimal dividend-penalty strategy has a band structure.Finally,some numerical examples with gamma distribution for the claims are analyzed.
基金Projects(41877239,51379112,51422904,40902084,41772298)supported by the National Natural Science Foundation of ChinaProject(2019GSF111028)supported by the Key Technology Research and Development Program of Shandong Province,China+1 种基金Project(2018JC044)supported by the Fundamental Research Funds of Shandong University,ChinaProject(JQ201513)supported by the Natural Science Foundation of Shandong Province,China。
文摘Floor water inrush is one of the main types of coal mine water hazards.With the development of deep mining,the prediction and evaluation of floor water inrush is particularly significant.This paper proposes a variable weight model,which combines a multi-factor interaction matrix(MFIM)and the technique for order performance by similarity to ideal solution(TOPSIS)to implement the risk assessment of floor water inrush in coal mines.Based on the MFIM,the interaction between seven evaluation indices,including the confined water pressure,water supply condition and aquifer water yield property,floor aquifuge thickness,fault water transmitting ability,fracture development degree,mining depth and thickness and their influence on floor water inrush were considered.After calculating the constant weights,the active degree evaluation was used to assign a variable weight to the indices.The values of the middle layer and final risk level were obtained by TOPSIS.The presented model was successfully applied in the 9901 working face in the Taoyang Mine and four additional coal mines and the results were highly consistent with the engineering situations.Compared with the existing nonlinear evaluation methods,the proposed model had advantages in terms of the weighting,principle explanation,and algorithm structure.
文摘One day,can we foresee earthquakes? This question always comes back from every telluric disaster,and the seismology is well annoyed to answer it.The destructtion of the city of Kobe in Japan,on January 17th 1995,aroused deep debates upon the research policy on earthquakes.This disaster obviously shows our well limited capacity to take up the challenge of the prediction of earthquakes because,finally,it is indeed in Japan where authorities invest most in
基金sponsored jointly by the National Natural Science Foundation of China(U0933006),National Natural Science Foundation of China(41006030,41176054)the Special Research Program(908Program)of Guangdong Province(GD908-JC-03,GD908-JC-10)
文摘Using the focal mechanism solutions and slip distribution model data of the Taiwan Straits MS7.3 earthquake on September 16, 1994, we calculate the static Coulomb stress changes stemming from the earthquake. Based on the distribution of aftershocks and stress field, as well as the location of historical earthquakes, we analyze the Coulomb stress change triggered by the Taiwan Straits MS7.3 earthquake. The result shows that the static Coulomb stress change obtained by forward modeling based on the slip distribution model is quite consistent with the location of aftershocks in the areas far away from the epicenter. Ninety percent of aftershocks occurred in the stress increased areas. The Coulomb stress change is not entirely consistent with the distribution of aftershocks near the epicenter. It is found that Coulomb stress change can better reflect the aftershock distribution far away from the epicenter, while such corresponding relationship becomes quite complex near the epicenter. Through the calculation of the Coulomb stress change, we find that the stress increases in the southwest part of the Min-Yue (Fujian-Guangdong) coastal fault zone, which enhances the seismic activity. Therefore, it is deemed that the sea area between Nanpeng Island and Dongshan Island, where the Min-Yue coastal fault zone intersects with the NW-trending Shanghang-Dongshan fault, has a high seismic risk.
文摘This paper mainly studies the risk management of equity investment projects and the identification and evaluation of the main risks in each stage of investment. The main risk described is whether the project benefit can reach the expectation, and the deep-seated reasons lie in the risk of policy environment, industrial structure and market forecast. Therefore, we must attach great importance to the research on risk management and supervision system of equity investment projects, and constantly establish and improve the research on supervision system with risk assessment of major business decisions before investment, investigation of business management during investment and post-investment evaluation as the main line, so as to prevent problems before they happen.
文摘In recent years, with the continuous development of China's economy, the credit business of commercial banks is also developing rapidly. However, with the rapid development of credit business, many problems are gradually exposed, and there are still some problems in credit risk management. The current risks in credit business restrict the development of commercial banks in China to a certain extent. Therefore, analyzing the problems faced by commercial banks in credit risk management and proposing corresponding solutions are not only beneficial to improving the quality of bank credit business, but also of great practical significance to the healthy development of commercial banks.
