Educational balance refers to the ideal that educational organizations and people who receive education enjoy equal treatment in educational activities under the thought of fair education and principle of educational ...Educational balance refers to the ideal that educational organizations and people who receive education enjoy equal treatment in educational activities under the thought of fair education and principle of educational equity,and the educational policy as well as legal system that guarantee its actual operations.The essence of balanced education development is to pursue educational equity and realize fair education.In terms of macroanalysis,it is the balance of educational supply and demand.In terms of mesoanalysis,it is the balance of educational resource disposition.In terms of microanalysis,it is the balance of school teaching processes,including the balance of the internal curriculum teaching resource disposition,and the balance of educational results as well as educational evaluation.Balanced education development is a historical category,which can be divided into four stages according to its achievement level.It is of great actual significance to establish the balancing index of fundamental educational development,especially the compulsory educational development,which is suitable for our national conditions and realities,to scientifically select the elements and to clarify the target of fundamental balanced education development.The data analysis indicates that the balancing index of our fundamental education in China is approaching this balance.展开更多
The extensive application of modern information and communication technology in the power system through the in-depth integration of the information system and the power system has led to the gradual development of th...The extensive application of modern information and communication technology in the power system through the in-depth integration of the information system and the power system has led to the gradual development of the cyberphysical power system(CPPS).While advanced information technology increases the safety and reliability of power system operations,it also increases the risks of fault propagation.To improve the reliability of CPPS from the perspective of power communication routing,it is proposed that the CPPS model and vulnerability assessment of power node reflect the correlation between information and energy flows with the service impact on power grid operation,which is an important index for evaluating communication services.According to the distribution of services at the different important levels on the links,the importance of the cross-layer link is established as the vulnerability evaluation index of the communication network.Then,the routing optimization model is proposed in combination with the service transmission risk under cyber-attack and the operating characteristics of the information system,which is solved through an improved fast-convergent genetic algorithm.The simulation results show that the proposed method allocates the alternate route to the low-risk link without significantly increasing the delay of the main route,which effectively improves the power supply reliability of CPPS in extreme cyber-attack scenarios.展开更多
文摘Educational balance refers to the ideal that educational organizations and people who receive education enjoy equal treatment in educational activities under the thought of fair education and principle of educational equity,and the educational policy as well as legal system that guarantee its actual operations.The essence of balanced education development is to pursue educational equity and realize fair education.In terms of macroanalysis,it is the balance of educational supply and demand.In terms of mesoanalysis,it is the balance of educational resource disposition.In terms of microanalysis,it is the balance of school teaching processes,including the balance of the internal curriculum teaching resource disposition,and the balance of educational results as well as educational evaluation.Balanced education development is a historical category,which can be divided into four stages according to its achievement level.It is of great actual significance to establish the balancing index of fundamental educational development,especially the compulsory educational development,which is suitable for our national conditions and realities,to scientifically select the elements and to clarify the target of fundamental balanced education development.The data analysis indicates that the balancing index of our fundamental education in China is approaching this balance.
基金supported by the National Key Research and Development Program of China under Grant 2016YFB0901100.
文摘The extensive application of modern information and communication technology in the power system through the in-depth integration of the information system and the power system has led to the gradual development of the cyberphysical power system(CPPS).While advanced information technology increases the safety and reliability of power system operations,it also increases the risks of fault propagation.To improve the reliability of CPPS from the perspective of power communication routing,it is proposed that the CPPS model and vulnerability assessment of power node reflect the correlation between information and energy flows with the service impact on power grid operation,which is an important index for evaluating communication services.According to the distribution of services at the different important levels on the links,the importance of the cross-layer link is established as the vulnerability evaluation index of the communication network.Then,the routing optimization model is proposed in combination with the service transmission risk under cyber-attack and the operating characteristics of the information system,which is solved through an improved fast-convergent genetic algorithm.The simulation results show that the proposed method allocates the alternate route to the low-risk link without significantly increasing the delay of the main route,which effectively improves the power supply reliability of CPPS in extreme cyber-attack scenarios.
