A New Method with High Confidence for Validation of Computer Simulation Models of Flight Systems

Computer simulation models may by used to gain further information about missile performance variability. Model validation is an important aspect of the test program for a missile system. Validation provides a basis for confidence in the model's results and is a necessary step if the model is to be used to draw inference about the behavior of the real missile. This paper is a review of methods useful for validation of computer simulation models of missile systems and provides a new method with high degree of confidence for validation of computer simulation models of missile systems. Some examples of the use of the new method in validating computer simulation models are given.

A novel adaptive temporal-spatial information fusion model based on Dempster-Shafer evidence theory

In the field of target recognition based on the temporal-spatial information fusion,evidence the-ory has received extensive attention.To achieve accurate and efficient target recognition by the evi-dence theory,an adaptive temporal-spatial information fusion model is proposed.Firstly,an adaptive evaluation correction mechanism is constructed by the evidence distance and Deng entropy,which realizes the credibility discrimination and adaptive correction of the spatial evidence.Secondly,the credibility decay operator is introduced to obtain the dynamic credibility of temporal evidence.Finally,the sequential combination of temporal-spatial evidences is achieved by Shafer’s discount criterion and Dempster’s combination rule.The simulation results show that the proposed method not only considers the dynamic and sequential characteristics of the temporal-spatial evidences com-bination,but also has a strong conflict information processing capability,which provides a new refer-ence for the field of temporal-spatial information fusion.

Building patients’trust in psychologists in online mental health communities

Sufferers’mental illnesses experience changes in communication,cognition,and behavior,exposing differences in social behavior and relationships.Many who suffer from mental health problems notice that the reduced communication ability leads to social inclusion and distrust of others.Online Mental Health Communities(OMHCs)facilitate a new means of communication between patients and physicians.Based on the trust source credibility framework,trust transitivity theory,social resources and physician-patient interactions,this study aims to evaluate the factors that influence patients’trust in OMHCs.We crawled the data from Haodf.com,the leading healthcare community platform in China,to study the factors that influence patients’trust using the ordinary least squares regression method.725 psychologists’records were collected on 19 November,2019,20 December,2019,and 20 May,2020.Compared with face-to-face physician appointments,Chief Physicians are more likely to gain patients’initial trust online.Further,psychologists’integrity,online reputation,and group size have significant positive impact on the initial trust of patients.Similarly,patients’online initial trust and efforts have significantly positive influences on their continuous trust online.To improve relationships between physicians and patients,physicians must strengthen their clinical abilities and be honest with patients.The findings of this study provide insights into the factors that influence patients’trust in OMHCs.