With the continuous development of economy and society and the continuous improvement of peoples’living environment requirements,the concept of sponge city construction has been recognized and understood by more and ...With the continuous development of economy and society and the continuous improvement of peoples’living environment requirements,the concept of sponge city construction has been recognized and understood by more and more people.The country has also recognized the significance of planning and construction of sponge cities.In the process of planning and constructing a sponge city,it is necessary to combine the reality of urban development with the construction of urban water supply and drainage systems and underground pipe corridors to promote the process of urban modernization.Based on this,this paper analyzes the water supply and drainage construction of the integrated pipe corridor in the sponge city.展开更多
The problem of designing integration traffic strategies for traffic corridors with the use of ramp metering, speed limit, and route guidance is considered in this paper. As an improvement to the previous work, the pre...The problem of designing integration traffic strategies for traffic corridors with the use of ramp metering, speed limit, and route guidance is considered in this paper. As an improvement to the previous work, the presented approach has the following five features： 1） modeling traffic flow to analyze traffic characteristics under the influence of variable speed limit, on-ramp metering and guidance information; 2） building a hierarchy model to realize the integration design of traffic control and route guidance in traffic corridors; 3） devising a multi-class analytical dynamic traffic assignment （DTA） model for traffic corridors, where not only the route choice process will be different for each user-class, but also the traffic flow operations are user-class specific because the travel time characteristic for each user-class is considered; 4） predicting route choice probabilities adaptively with real-time traffic conditions and route choice behaviors corresponding to variant users, rather than assuming as pre-determined; and 5） suggesting a numerical solution algorithm of the hierarchy model presented in this paper based on the modified algorithm of iterative optimization assignment （IOA）. Preliminary numerical test demonstrates the potential of the developed model and algorithm for integration corridor control.展开更多
The Bashu Cultural and Tourism Corridor is a region centered on Chongqing's main city and Chengdu,with the high-speed railways,expressways,and cities(counties)along the Yangtze River system connecting the two plac...The Bashu Cultural and Tourism Corridor is a region centered on Chongqing's main city and Chengdu,with the high-speed railways,expressways,and cities(counties)along the Yangtze River system connecting the two places as important components.Sichuan and Chongqing,guided by the"Bashu Cultural and Tourism Corridor Construction Plan,"have issued a series of policies and systems for the development of Bashu cultural tourism,vigorously promoting the construction of the Bashu Cultural and Tourism Corridor.However,in the process of promoting the construction of the Bashu Cultural and Tourism Corridor,there are also many challenges,such as insufficient integration of the cultural and tourism industry,outdated development models for cultural tourism,imperfect coordination mechanisms within the industry,a large gap in professional talents in the cultural and tourism industry,and inadequate exploration of characteristic cultural tourism resources.Among these,the insufficient integration of the cultural and tourism industry is particularly prominent,manifested in the disappearance of regional culture,a significant loss of talent,and low-quality development of the tourism industry.Cultural and tourism integration is a deep-level integration in the fields of concepts,functions,resources,industries,and technologies.This topic focuses on the issue of deep integration of cultural and tourism development in the construction of the Bashu Cultural and Tourism Corridor,which has important theoretical and practical significance.展开更多
New energy is considered to be an indispensable means to significantly reduce carbon emissions and to achieve the temperature-control goals defined by the Paris Climate Accord.Despite the bright future,the inherent ch...New energy is considered to be an indispensable means to significantly reduce carbon emissions and to achieve the temperature-control goals defined by the Paris Climate Accord.Despite the bright future,the inherent characteristics,including volatility,intermittency and uneven seasonal and geographical distributions,and the rapid growth of installations make it increasingly difficult to connect green electricity to grids.This becomes a dominating bottleneck for the low-carbon transition of China Energy Group(CE).This paper aims to help with the implementation of the new-energy development plan and to define the low-carbon energy-transition path for CE.Based on the current industry structure of CE,Shenhua Engineering Technology Co.,Ltd proposes the concept of an‘integrated energy corridor’.The integrated energy corridor represents a comprehensive energy-transmission channel with coal,green electricity,green hydrogen,green oxygen and other green energy products such as transmission media,railways,pipelines and power grids as transmission means and thermal power,coal chemical plants,cities,etc.along the route as new-energy consumers and regulators.The integrated energy corridor can support the rapid development of new-energy assets and the low-carbon transition of CE.展开更多
文摘With the continuous development of economy and society and the continuous improvement of peoples’living environment requirements,the concept of sponge city construction has been recognized and understood by more and more people.The country has also recognized the significance of planning and construction of sponge cities.In the process of planning and constructing a sponge city,it is necessary to combine the reality of urban development with the construction of urban water supply and drainage systems and underground pipe corridors to promote the process of urban modernization.Based on this,this paper analyzes the water supply and drainage construction of the integrated pipe corridor in the sponge city.
基金supported by the National Natural Science Foundation of China (No.50808025)the Ministry of Communications of China Application Foundation (No.2006319815080)+1 种基金the Key Project of Hunan Education Department (No.08A003)the Project of Hunan Science and Technology Department (No.2008GK3114)
文摘The problem of designing integration traffic strategies for traffic corridors with the use of ramp metering, speed limit, and route guidance is considered in this paper. As an improvement to the previous work, the presented approach has the following five features： 1） modeling traffic flow to analyze traffic characteristics under the influence of variable speed limit, on-ramp metering and guidance information; 2） building a hierarchy model to realize the integration design of traffic control and route guidance in traffic corridors; 3） devising a multi-class analytical dynamic traffic assignment （DTA） model for traffic corridors, where not only the route choice process will be different for each user-class, but also the traffic flow operations are user-class specific because the travel time characteristic for each user-class is considered; 4） predicting route choice probabilities adaptively with real-time traffic conditions and route choice behaviors corresponding to variant users, rather than assuming as pre-determined; and 5） suggesting a numerical solution algorithm of the hierarchy model presented in this paper based on the modified algorithm of iterative optimization assignment （IOA）. Preliminary numerical test demonstrates the potential of the developed model and algorithm for integration corridor control.
基金sponsored by Chengdu department-level project“Research on the deep integration and development of Chinese tourism in the construction of the Bashu Cultural Tourism Corridor”.Number:CYSC23C008.
文摘The Bashu Cultural and Tourism Corridor is a region centered on Chongqing's main city and Chengdu,with the high-speed railways,expressways,and cities(counties)along the Yangtze River system connecting the two places as important components.Sichuan and Chongqing,guided by the"Bashu Cultural and Tourism Corridor Construction Plan,"have issued a series of policies and systems for the development of Bashu cultural tourism,vigorously promoting the construction of the Bashu Cultural and Tourism Corridor.However,in the process of promoting the construction of the Bashu Cultural and Tourism Corridor,there are also many challenges,such as insufficient integration of the cultural and tourism industry,outdated development models for cultural tourism,imperfect coordination mechanisms within the industry,a large gap in professional talents in the cultural and tourism industry,and inadequate exploration of characteristic cultural tourism resources.Among these,the insufficient integration of the cultural and tourism industry is particularly prominent,manifested in the disappearance of regional culture,a significant loss of talent,and low-quality development of the tourism industry.Cultural and tourism integration is a deep-level integration in the fields of concepts,functions,resources,industries,and technologies.This topic focuses on the issue of deep integration of cultural and tourism development in the construction of the Bashu Cultural and Tourism Corridor,which has important theoretical and practical significance.
文摘New energy is considered to be an indispensable means to significantly reduce carbon emissions and to achieve the temperature-control goals defined by the Paris Climate Accord.Despite the bright future,the inherent characteristics,including volatility,intermittency and uneven seasonal and geographical distributions,and the rapid growth of installations make it increasingly difficult to connect green electricity to grids.This becomes a dominating bottleneck for the low-carbon transition of China Energy Group(CE).This paper aims to help with the implementation of the new-energy development plan and to define the low-carbon energy-transition path for CE.Based on the current industry structure of CE,Shenhua Engineering Technology Co.,Ltd proposes the concept of an‘integrated energy corridor’.The integrated energy corridor represents a comprehensive energy-transmission channel with coal,green electricity,green hydrogen,green oxygen and other green energy products such as transmission media,railways,pipelines and power grids as transmission means and thermal power,coal chemical plants,cities,etc.along the route as new-energy consumers and regulators.The integrated energy corridor can support the rapid development of new-energy assets and the low-carbon transition of CE.
