NO one can precisely describe Beijing with a single word or sentence due to its extreme complexity.Every passenger who arrives in Beijing by plane is welcomed by an ocean of light.The light resembles boiling magma,flo...NO one can precisely describe Beijing with a single word or sentence due to its extreme complexity.Every passenger who arrives in Beijing by plane is welcomed by an ocean of light.The light resembles boiling magma,flowing along a layout of the city in an orderly manner.If Chang’an Avenue,Sanlitun,China World Trade Center,and National Olympic Sports Center are highlights of Beijing,the hutong s(lanes)distributed along the Central Axis represent the other side of the capital city.They tell the stories of this city and its citizens with a subtler voice.In these places where the city’s neon lights cannot reach,the essence of the city’s daily life exists in a small restaurant,a tanghulu(a traditional Chinese snack of candied fruit),or even a bowl of fermented soybean drink.展开更多
A caféin the ancient city of Kashgar has become a symbol of cross-cultural bonding.Strolling through the winding streets of the ancient city of Kashgar in northwest China’s Xinjiang Uygur Autonomous Region,you w...A caféin the ancient city of Kashgar has become a symbol of cross-cultural bonding.Strolling through the winding streets of the ancient city of Kashgar in northwest China’s Xinjiang Uygur Autonomous Region,you will come across a cozy cafécalled Dili&Diya.The aroma of freshly brewed coffee drifts through the air,much like the heart-warming love story of the café’s owners,spreading warmth to all who visit.展开更多
Highly versatile machines, such as wheel loaders, forklifts, and mining haulers, are subject to many kinds of working conditions, as well as indefinite factors that lead to the complexity of the load. The load probabi...Highly versatile machines, such as wheel loaders, forklifts, and mining haulers, are subject to many kinds of working conditions, as well as indefinite factors that lead to the complexity of the load. The load probability distribution function （PDF） of transmission gears has many distributions centers; thus, its PDF cannot be well represented by just a single-peak function. For the purpose of representing the distribution characteristics of the complicated phenomenon accurately, this paper proposes a novel method to establish a mixture model. Based on linear regression models and correlation coefficients, the proposed method can be used to automatically select the best-fitting function in the mixture model. Coefficient of determination, the mean square error, and the maximum deviation are chosen and then used as judging criteria to describe the fitting precision between the theoretical distribution and the corresponding histogram of the available load data. The applicability of this modeling method is illustrated by the field testing data of a wheel loader. Meanwhile, the load spectra based on the mixture model are compiled. The comparison results show that the mixture model is more suitable for the description of the load-distribution characteristics. The proposed research improves the flexibility and intelligence of modeling, reduces the statistical error and enhances the fitting accuracy, and the load spectra complied by this method can better reflect the actual load characteristic of the gear component.展开更多
THE UBPA (Urban Best Practices Area) of the 2010 Shanghai World Expo show-cases case histories of urban living from around the world, illustrating different approaches to
ST. Paul's Church was established in 1923 as the first official Christian church in Nanjing, Jiangsu Province. A gothic building situated on South Taiping Road, the small church was designed to reflect the style o...ST. Paul's Church was established in 1923 as the first official Christian church in Nanjing, Jiangsu Province. A gothic building situated on South Taiping Road, the small church was designed to reflect the style of European churches in rural areas. Every Sunday at 10:30am, there is an English service in the small hall of St. Paul's Church. Professors from Nanjing University organize the activity, and it is attended by Nanjing's foreign community, local English-speaking Christians as well as students who come to study English.展开更多
Against the raging epidemic, Beijing has ratcheted up its prevention measures, which can be seen in all its communities and transportation stations. With his camera lens, China Today’s reporter captured moments of ho...Against the raging epidemic, Beijing has ratcheted up its prevention measures, which can be seen in all its communities and transportation stations. With his camera lens, China Today’s reporter captured moments of how Beijingers brave the novel coronavirus.展开更多
文摘NO one can precisely describe Beijing with a single word or sentence due to its extreme complexity.Every passenger who arrives in Beijing by plane is welcomed by an ocean of light.The light resembles boiling magma,flowing along a layout of the city in an orderly manner.If Chang’an Avenue,Sanlitun,China World Trade Center,and National Olympic Sports Center are highlights of Beijing,the hutong s(lanes)distributed along the Central Axis represent the other side of the capital city.They tell the stories of this city and its citizens with a subtler voice.In these places where the city’s neon lights cannot reach,the essence of the city’s daily life exists in a small restaurant,a tanghulu(a traditional Chinese snack of candied fruit),or even a bowl of fermented soybean drink.
文摘A caféin the ancient city of Kashgar has become a symbol of cross-cultural bonding.Strolling through the winding streets of the ancient city of Kashgar in northwest China’s Xinjiang Uygur Autonomous Region,you will come across a cozy cafécalled Dili&Diya.The aroma of freshly brewed coffee drifts through the air,much like the heart-warming love story of the café’s owners,spreading warmth to all who visit.
基金supported by National Natural Science Foundation of China (Grant Nos. 50805065, 51075179)
文摘Highly versatile machines, such as wheel loaders, forklifts, and mining haulers, are subject to many kinds of working conditions, as well as indefinite factors that lead to the complexity of the load. The load probability distribution function （PDF） of transmission gears has many distributions centers; thus, its PDF cannot be well represented by just a single-peak function. For the purpose of representing the distribution characteristics of the complicated phenomenon accurately, this paper proposes a novel method to establish a mixture model. Based on linear regression models and correlation coefficients, the proposed method can be used to automatically select the best-fitting function in the mixture model. Coefficient of determination, the mean square error, and the maximum deviation are chosen and then used as judging criteria to describe the fitting precision between the theoretical distribution and the corresponding histogram of the available load data. The applicability of this modeling method is illustrated by the field testing data of a wheel loader. Meanwhile, the load spectra based on the mixture model are compiled. The comparison results show that the mixture model is more suitable for the description of the load-distribution characteristics. The proposed research improves the flexibility and intelligence of modeling, reduces the statistical error and enhances the fitting accuracy, and the load spectra complied by this method can better reflect the actual load characteristic of the gear component.
文摘THE UBPA (Urban Best Practices Area) of the 2010 Shanghai World Expo show-cases case histories of urban living from around the world, illustrating different approaches to
文摘ST. Paul's Church was established in 1923 as the first official Christian church in Nanjing, Jiangsu Province. A gothic building situated on South Taiping Road, the small church was designed to reflect the style of European churches in rural areas. Every Sunday at 10:30am, there is an English service in the small hall of St. Paul's Church. Professors from Nanjing University organize the activity, and it is attended by Nanjing's foreign community, local English-speaking Christians as well as students who come to study English.
文摘Against the raging epidemic, Beijing has ratcheted up its prevention measures, which can be seen in all its communities and transportation stations. With his camera lens, China Today’s reporter captured moments of how Beijingers brave the novel coronavirus.
