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Simultaneous optimization of transit network and public bicycle station network 被引量:1
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作者 刘洋 朱宁 马寿峰 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第4期1574-1584,共11页
The traditional manner to design public transportation system is to sequentially design the transit network and public bicycle network. A new public transportation system design problem that simultaneously considers b... The traditional manner to design public transportation system is to sequentially design the transit network and public bicycle network. A new public transportation system design problem that simultaneously considers both bus network design and public bicycle network design is proposed. The chemical reaction optimization(CRO) is designed to solve the problem. A shortcoming of CRO is that, when the two-molecule collisions take place, the molecules are randomly picked from the container.Hence, we improve CRO by employing different mating strategies. The computational results confirm the benefits of the mating strategies. Numerical experiments are conducted on the Sioux-Falls network. A comparison with the traditional sequential modeling framework indicates that the proposed approach has a better performance and is more robust. The practical applicability of the approach is proved by employing a real size network. 展开更多
关键词 public transportation system transit route design bicycle sharing system chemical reaction optimization mating strategy
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The Challenges Faced on Transit Transport Corridors by Landlocked Countries in Central Africa: Literature Review
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作者 Djasrabe Frederic Helai Huang Chenghui Mao 《Open Journal of Applied Sciences》 2021年第11期1200-1211,共12页
The landlocked countries are the one without access to the sea and can be assimilate as countries around the world with a disadvantage of geography situation location. Chad and the Central African Republic are two of ... The landlocked countries are the one without access to the sea and can be assimilate as countries around the world with a disadvantage of geography situation location. Chad and the Central African Republic are two of the 40 landlocked countries around the world that transport 80% of their goods by road and rail, and as much as almost more than 50% of their passengers through a transit country with a transit transport system which is crucial for their trade and exchanges. The study aims to introduce the importance to have a good and efficiency transport network infrastructure in Central Africa to facilitate the trade for the landlocked countries of Central Africa (Chad and the Central African Republic), member of CEMAC trade area and proposes some measures that can be adopt</span><span style="font-family:"">ed</span><span style="font-family:""> to improve their conditions and ameliorate the trade for those countries. 展开更多
关键词 Central Africa transit Transport Corridor for Landlocked Countries
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Low-field mobility and carrier transport mechanism transition in nanoscale MOSFETs 被引量:1
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作者 刘宏伟 王润声 +1 位作者 黄如 张兴 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2010年第4期37-40,共4页
This paper extends the flux scattering method to study the carrier transport property in nanoscale MOSFETs with special emphasis on the low-field mobility and the transport mechanism transition. A unified analytical e... This paper extends the flux scattering method to study the carrier transport property in nanoscale MOSFETs with special emphasis on the low-field mobility and the transport mechanism transition. A unified analytical expression for the low-field mobility is proposed, which covers the entire regime from drift-diffusion transport to quasi-ballistic transport in 1-D, 2-D and 3-D MOSFETs. Two key parameters, namely the long-channel low-field mobility (λ0) and the low-field mean free path (λ0), are obtained from the experimental data, and the transport mechanism transition in MOSFETs is further discussed both experimentally and theoretically. Our work shows that λ0 is available to characterize the inherent transition of the carrier transport mechanism rather than the low-field mobility. The mobility reduces in the MOSFET with the shrinking of the channel length; however, λ0 is nearly a constant, and λ0 can be used as the "entry criterion" to determine whether the device begins to operate under quasi-ballistic transport to some extent. 展开更多
关键词 MOBILITY low-field mean free path transport mechanism transition
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Projects of Development of Transcontinental Transport-Economic Belts in Northern Eurasia 被引量:2
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作者 Peter BAKLANOV Matvey ROMANOV +1 位作者 Vladimir KARAKIN Alexey LANKIN 《Journal of Resources and Ecology》 CSCD 2015年第2期110-113,共4页
The role of the Trans-Siberian main railway is considered related to interaction between the West and the East of Eurasia. The stages of formation of a transport-economic belt along the Trans-Siberian main railway and... The role of the Trans-Siberian main railway is considered related to interaction between the West and the East of Eurasia. The stages of formation of a transport-economic belt along the Trans-Siberian main railway and its branches are distinguished. The main features of long-term development of the Trans-Siberian main railway, its new branches, and also the Russian mega project "Integrated Eurasian infrastructural system" are presented. The comparative characteristic of a zone of influence of the Trans-Siberian main railway and a New Silk Road in the People's Republic of China is given. General environmental issues in the development of transcontinental Eur- asian transport-economic belts are singled out. The authors believe that despite some competition to the Trans-Si- berian Main Railway in the Eurasian transport transit, realization of the New Silk Road project will bring obvious so- cio-economic and environmental benefits for participating countries through formation of the zone of the sustainable development along this transport corridor. Finally, it will undoubtedly contribute to achievement of closer economic integration and greater security in Eurasia. 展开更多
关键词 Eurasian transport transit in-land development railways modernization environmental issues
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