The problems of current highly redundant flight control system are analyzed in this paper. Our study gives methods of utilizing other information to reduce physical components on the condition of meeting the reliabili...The problems of current highly redundant flight control system are analyzed in this paper. Our study gives methods of utilizing other information to reduce physical components on the condition of meeting the reliability requirements for flight control system. The strategies presented in this paper mainly include information redundancy, multi-thread, time redundancy, geometry space redundancy, etc.. Analysis and simulation show these non-hardware based methods can reduce the requirement of system hardware level and thus reduce the system complexity, weight, space, costs and R＆D （research and development） time.展开更多
An optimization model and its solution algorithm for alternate traffic restriction(ATR) schemes were introduced in terms of both the restriction districts and the proportion of restricted automobiles. A bi-level progr...An optimization model and its solution algorithm for alternate traffic restriction(ATR) schemes were introduced in terms of both the restriction districts and the proportion of restricted automobiles. A bi-level programming model was proposed to model the ATR scheme optimization problem by aiming at consumer surplus maximization and overload flow minimization at the upper-level model. At the lower-level model, elastic demand, mode choice and multi-class user equilibrium assignment were synthetically optimized. A genetic algorithm involving prolonging codes was constructed, demonstrating high computing efficiency in that it dynamically includes newly-appearing overload links in the codes so as to reduce the subsequent searching range. Moreover,practical processing approaches were suggested, which may improve the operability of the model-based solutions.展开更多
To study the relationship between under-urbanization and international trade, we set up a model of the transfer of surplus rural labor in an open economy using 1995-2010 data from 40 countries and regions where indust...To study the relationship between under-urbanization and international trade, we set up a model of the transfer of surplus rural labor in an open economy using 1995-2010 data from 40 countries and regions where industrialization was incomplete. Our findings indicate that if, in an open economy, there is a substantial labor surplus and in which domestic goods and services can be sold to foreign markets, there will be a significantly positive correlation between the net export ratio and the degree to which urbanization lags behind industrialization; countries or regions with higher marketization level, lower urban unemployment rate and poorer public health facilities are more likely to be under- urbanized; and an inverted U-shaped relationship exists between under-urbanization and percapita GDR展开更多
文摘The problems of current highly redundant flight control system are analyzed in this paper. Our study gives methods of utilizing other information to reduce physical components on the condition of meeting the reliability requirements for flight control system. The strategies presented in this paper mainly include information redundancy, multi-thread, time redundancy, geometry space redundancy, etc.. Analysis and simulation show these non-hardware based methods can reduce the requirement of system hardware level and thus reduce the system complexity, weight, space, costs and R＆D （research and development） time.
基金Projects(71171200,51108465,71101155)supported by the National Natural Science Foundation of China
文摘An optimization model and its solution algorithm for alternate traffic restriction(ATR) schemes were introduced in terms of both the restriction districts and the proportion of restricted automobiles. A bi-level programming model was proposed to model the ATR scheme optimization problem by aiming at consumer surplus maximization and overload flow minimization at the upper-level model. At the lower-level model, elastic demand, mode choice and multi-class user equilibrium assignment were synthetically optimized. A genetic algorithm involving prolonging codes was constructed, demonstrating high computing efficiency in that it dynamically includes newly-appearing overload links in the codes so as to reduce the subsequent searching range. Moreover,practical processing approaches were suggested, which may improve the operability of the model-based solutions.
基金a research product of the CASS Innovation Project "Urbanization,Structural Effects and China's Economic Growth Model"
文摘To study the relationship between under-urbanization and international trade, we set up a model of the transfer of surplus rural labor in an open economy using 1995-2010 data from 40 countries and regions where industrialization was incomplete. Our findings indicate that if, in an open economy, there is a substantial labor surplus and in which domestic goods and services can be sold to foreign markets, there will be a significantly positive correlation between the net export ratio and the degree to which urbanization lags behind industrialization; countries or regions with higher marketization level, lower urban unemployment rate and poorer public health facilities are more likely to be under- urbanized; and an inverted U-shaped relationship exists between under-urbanization and percapita GDR
