期刊文献+
共找到7篇文章
< 1 >
每页显示 20 50 100
Transportation Network Density,Domestic Market Integration and Excess Sensitivity of Household Consumption
1
作者 Taiming Chen Yingfei Qi Liangsheng Du 《China Finance and Economic Review》 2024年第3期24-43,共20页
From the perspective of domestic market integration,this paper systematically examines the impact of transportation infrastructure conditions on excess sensitivity of household consumption based on the China Family Pa... From the perspective of domestic market integration,this paper systematically examines the impact of transportation infrastructure conditions on excess sensitivity of household consumption based on the China Family Panel Survey(CFPS)and multi-level matching panel data of transportation network density.The results show that the fast-growing development of the transportation infrastructure network has a significant alleviating effect on excess sensitivity of household consumption along the route,and the conclusion is still robust after the use of the multi-dimensional instrumental variable method and a series of robustness tests.According to the heterogeneity tests,in terms of the alleviating effect of transportation infrastructure,railroads rank the first,highways the second,substandard roads the third,waterways the fourth,and roads of other grades at the bottom.The mechanism test reveals that the improvement of domestic market integration is an important channel for transportation infrastructure to alleviate excess sensitivity of household consumption.This paper confirms that improving the transportation infrustructure system is conducive to the construction of a unified national market,alleviating excess sensitivity of consumption and stimulating consumption.This paper provides suggestions for implementing the strategy of boosting domestic demand,and helps the government understand households'consumption decision-making from a broader perspective.This study also provides a theoretical basis for the economic spillover effect of transportation infrastructure. 展开更多
关键词 domestic market integration household consumption transportation network density excess sensitivity
原文传递
A Lagrangian-based flame index for the transported probability density function method
2
作者 Zhen Lu Hua Zhou +2 位作者 Zhuyin Ren Yue Yang Hong G.Im 《Theoretical & Applied Mechanics Letters》 CSCD 2022年第1期30-34,共5页
We propose a new flame index for the transported probability density function(PDF) method. The flame index uses mixing flux projections of Lagrangian particles on mixture fraction and progress variable directions as t... We propose a new flame index for the transported probability density function(PDF) method. The flame index uses mixing flux projections of Lagrangian particles on mixture fraction and progress variable directions as the metrics to identify the combustion mode, with the Burke-Schumann solution as a reference. A priori validation of the flame index is conducted with a series of constructed turbulent partially premixed reactors. It indicates that the proposed flame index is able to identify the combustion mode based on the subgrid mixing information. The flame index is then applied the large eddy simulation/PDF datasets of turbulent partially premixed jet flames. Results show that the flame index separate different combustion modes and extinction correctly. The proposed flame index provides a promising tool to analyze and model the partially premixed flames adaptively. 展开更多
关键词 Flame index Transported probability density function Partially premixed combustion
下载PDF
Theoretical Investigation on the Charge Transport Properties of 2,5-Di(cyanovinyl)-thiophene/furan with the Kinetic Monte Carlo Method 被引量:1
3
作者 赵蔡斌 葛红光 +2 位作者 靳玲侠 张强 尹世伟 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第5期687-697,共11页
Exploring, designing, and synthesizing novel organic field-effect transistor (OFET) materials have kept an important and hot issue in organic electronics. In the current work, the charge transport properties for 2,5... Exploring, designing, and synthesizing novel organic field-effect transistor (OFET) materials have kept an important and hot issue in organic electronics. In the current work, the charge transport properties for 2,5-di(cyanovinyl)thiophene/furan crystal associating two pentafluorophenyl units linked via the azomethine bond, CTE and CFE have been theoretically investigated by means of density functional theory (DFT) calculations coupled with the incoherent charge-hopping mechanism and the kinetic Monte Carlo simulation. Results show that these two compounds possess remarkably low-lying HOMO (-7.0 eV) and LUMO (-4.0 eV) levels, as well as large electron affinities (〉 3.0 eV), which indicate their high stability exposed to air as promising OFET materials. However, the ph value at room temperature (T = 300 K) is predicted to be 2.058x10^7 cm26Vl·s-1, and the is as low as 9.834^10-8 cm2-V-l.s-1 for CFT crystal. Meanwhile, these two values are 7.561 x 10-8 and 8.437 x 10-8 cm2.V-I.s-1 for the CFE crystal, respectively. Furthermore, the simulation of angle-dependent mobility in the a-b, a-c, and b-c crystal planes shows that the charge transport in CTE and CFE crystals is remarkably anisotropic, which maybe is helpful for the fabrication of high-performance OFET devices. 展开更多
关键词 charge transport density functional theory theoretical investigation
下载PDF
The relation between the Mindanao Current and Mindanao Undercurrent on seasonal scale
4
作者 WANG Yan LAN Jian LI Li 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2016年第5期1-8,共8页
The ocean general circulation model for the earth simulator(OFES) products is applied to estimate the transports of the Mindanao Current(MC) and the Mindanao undercurrent(MUC) and explore the relation between th... The ocean general circulation model for the earth simulator(OFES) products is applied to estimate the transports of the Mindanao Current(MC) and the Mindanao undercurrent(MUC) and explore the relation between them on seasonal scale. In general, the MUC is composed of the lower part of the Southern Pacific Tropical Water(SPTW)and Antarctic Intermediate Water(AAIW). While the deep northward core below 1 500 m is regarded as a portion of MUC. Both salinity and potential density restrictions become more reasonable to estimate the transports of MC/MUC as the properties of water mass having been taken into consideration. The climatological annual mean transport of MC is(37.4±5.81)×10~6 m^3/s while that of MUC is(23.92±6.47)×10~6 m^3/s integrated between 26.5 σ_θ and 27.7 σ_θ, and(17.53±5.45)×10~6 m^3/s integrated between 26.5 σ_θ and 27.5 σ_θ in the OFES. The variations of MC and MUC have good positive correlation with each other on the seasonal scale: The MC is stronger in spring and weaker in fall, which corresponds well with the MUC, and the correlation coefficient of them is 0.67 in the OFES.The same variations are also appeared in hybrid coordinate ocean model(HYCOM) results. Two sensitive experiments based on HYCOM are conducted to explore the relation between MC and MUC. The MUC(26.5〈σ_θ〈27.7) is strengthening as the MC increases with the enhancement of zonal wind field. It is shown,however, that the main part of the increasement is the deeper northward high potential density water(HPDW),while the AAIW almost remains stable, SPTW decreases, and vice versa. 展开更多
关键词 Mindanao Current Mindanao Undercurrent potential density transport seasonal variability
下载PDF
Study of Transport Properties in Armchair Graphyne Nanoribbons: A Density Functional Approach
5
作者 S.Golafrooz Shahri M.R.Roknabadi +1 位作者 N.Shahtahmasebi M.Behdani 《Communications in Theoretical Physics》 SCIE CAS CSCD 2016年第7期143-148,共6页
In present paper, the non-equilibrium Green function(NEGF) method along with the density functional theory(DFT) are used to investigate the effect of width on transport and electronic properties of armchair graphyne(... In present paper, the non-equilibrium Green function(NEGF) method along with the density functional theory(DFT) are used to investigate the effect of width on transport and electronic properties of armchair graphyne(γ-graphyne) nanoribbons. The results show that all the studied nanoribbons are semiconductor and their band gaps decrease as the widths of nanoribbons increase, which will result in increasing current at a certain voltage. Also our results show the promising application of armchair graphyne nanoribbons in nano-electrical devices. 展开更多
关键词 transport properties density functional theory graphyne nanoribbons non-equilibrium green function
原文传递
Review of Lagrangian stochastic models for turbulent combustion 被引量:2
6
作者 Tianwei Yang Yu Yin +1 位作者 Hua Zhou Zhuyin Ren 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2021年第10期1467-1488,I0001,共23页
Predictive simulation of the combustion process in engine is crucial to understand the complex underlying physicochemical processes, improve engine performance, and reduce pollutant emissions. Key issues such as the p... Predictive simulation of the combustion process in engine is crucial to understand the complex underlying physicochemical processes, improve engine performance, and reduce pollutant emissions. Key issues such as the physical modeling of the interaction between turbulence, chemistry and droplets, and the incorporation of the detailed chemistry in high-fidelity simulations of complex flows remain essential though challenging. This paper reviews the transported probability density function method for turbulent dilute spray flames in the dual-Lagrangian framework that shows potential to address some critical modeling issues. An overview is presented for the contributions made within the last decade or so for the three key ingredients for modeling the interaction between turbulence, chemistry and droplets, i.e., micro-mixing, subgrid dispersion and two-phase coupling. Then, various methods for detailed chemistry acceleration are reviewed to address the issue of high computational cost for its use in multidimensional simulations. Finally, some applications of the dual-Lagrangian method in both laboratory-scale and device-scale configurations are provided to demonstrate its capability as well as deficiency at the current stage. Some open modeling challenges are raised and recommended for further investigation. 展开更多
关键词 Transported probability density function method Large eddy simulation Dual-Lagrangian framework Turbulent spray flames Detailed chemistry
原文传递
A first-principles study of dihydroazulene as a possible optical molecular switch 被引量:2
7
作者 XIA CaiJuan LIU DeSheng LIU HanChen 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2011年第3期437-441,共5页
By applying nonequilibrium Green's function formalism combined with first-principles density functional theory, we investigate the electronic transport properties of the dihydroazulene optical molecular switch. Th... By applying nonequilibrium Green's function formalism combined with first-principles density functional theory, we investigate the electronic transport properties of the dihydroazulene optical molecular switch. Three kinds of adsorption sites including the hollow, bridge and top sites are studied. The two forms of this molecule, namely the open form and the closed form, can reversibly switch from each other upon photoexcitation. Their transmission spectra are remarkably distinctive. Theoretical results show that the current of the closed form is always significantly larger than that of the open form for all three adsorption sites, which promises this system as possibly one of the good candidates for optical switches due to its unique advantage, and which may have some potential applications in the future molecular circuit. 展开更多
关键词 molecular switch nonequilibrium Green’s function electronic transport density functional theory
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部