The advanced optimization method named as adaptive range differential evolution （ARDE） is developed. The optimization performance of ARDE is demonstrated using a typical mathematical test and compared with the stand...The advanced optimization method named as adaptive range differential evolution （ARDE） is developed. The optimization performance of ARDE is demonstrated using a typical mathematical test and compared with the standard genetic algorithm and differential evolution. Combined with parallel ARDE, surface modeling method and Navier-Stokes solution, a new automatic aerodynamic optimization method is presented. A low aspect ratio transonic turbine stage is optimized for the maximization of the isentropic efficiency with forty-one design variables in total. The coarse-grained parallel strategy is applied to accelerate the design process using 15 CPUs. The isentropic efficiency of the optimum design is 1.6% higher than that of the reference design. The aerodynamic performance of the optimal design is much better than that of the reference design.展开更多
The article is devoted to problems of adaptation of foreign labor in Russia. The feature of approach to analysis of the problem lies in trying to examine this process at several levels： macro-level, meso-level, micro...The article is devoted to problems of adaptation of foreign labor in Russia. The feature of approach to analysis of the problem lies in trying to examine this process at several levels： macro-level, meso-level, micro-level, and individual level. The major factors influencing adaptation of foreign labor at each level are allocated. It is assumed between foreign workers and local communities. The author considers such aspects as the relation of local communities to arrival of foreign labor, the reasons for arrival of foreign labor to Russia and features of contact of local communities with foreign workers. This position is proved by means of a case study conducted in Yekaterinburg.展开更多
This article employs qualitative research methods to explore the urban adaptation and adaptation processes of Chinese migrant children.Through twenty-one in-depth interviews with migrant children,the researchers disco...This article employs qualitative research methods to explore the urban adaptation and adaptation processes of Chinese migrant children.Through twenty-one in-depth interviews with migrant children,the researchers discovered:The participant migrant children showed a fairly high level of adaptation to the city;their process of urban adaptation emerged as three categories:the U-Type,the J-type,and the“flat line”type.Also explored were long-term acquisition of explicit behaviors,implicit notions,adaptation to the socio-cultural environment,and success in education as difficult aspects of adaptation.After comparing these three processes,the research team developed a theory of migrant children urban adaptation.It hypothesizes that during the urban adaptation process,migrant children will encounter four stages of development:excitement and curiosity,shock and resistance,exploration and adaptation,and finally integration and assimilation.展开更多
基金This project is supported by Advanced Propulsion Technologies Demonstration Program of Commission of Science Technology and Industry for National Defense of China(No.APTD-0602-04).
文摘The advanced optimization method named as adaptive range differential evolution （ARDE） is developed. The optimization performance of ARDE is demonstrated using a typical mathematical test and compared with the standard genetic algorithm and differential evolution. Combined with parallel ARDE, surface modeling method and Navier-Stokes solution, a new automatic aerodynamic optimization method is presented. A low aspect ratio transonic turbine stage is optimized for the maximization of the isentropic efficiency with forty-one design variables in total. The coarse-grained parallel strategy is applied to accelerate the design process using 15 CPUs. The isentropic efficiency of the optimum design is 1.6% higher than that of the reference design. The aerodynamic performance of the optimal design is much better than that of the reference design.
文摘The article is devoted to problems of adaptation of foreign labor in Russia. The feature of approach to analysis of the problem lies in trying to examine this process at several levels： macro-level, meso-level, micro-level, and individual level. The major factors influencing adaptation of foreign labor at each level are allocated. It is assumed between foreign workers and local communities. The author considers such aspects as the relation of local communities to arrival of foreign labor, the reasons for arrival of foreign labor to Russia and features of contact of local communities with foreign workers. This position is proved by means of a case study conducted in Yekaterinburg.
文摘This article employs qualitative research methods to explore the urban adaptation and adaptation processes of Chinese migrant children.Through twenty-one in-depth interviews with migrant children,the researchers discovered:The participant migrant children showed a fairly high level of adaptation to the city;their process of urban adaptation emerged as three categories:the U-Type,the J-type,and the“flat line”type.Also explored were long-term acquisition of explicit behaviors,implicit notions,adaptation to the socio-cultural environment,and success in education as difficult aspects of adaptation.After comparing these three processes,the research team developed a theory of migrant children urban adaptation.It hypothesizes that during the urban adaptation process,migrant children will encounter four stages of development:excitement and curiosity,shock and resistance,exploration and adaptation,and finally integration and assimilation.
