Laboratory experiments are one of the important means used to investigate travel choice behavior under strategic uncertainty.Many experiment-based studies have shown that the Nash equilibrium can predict aggregated ro...Laboratory experiments are one of the important means used to investigate travel choice behavior under strategic uncertainty.Many experiment-based studies have shown that the Nash equilibrium can predict aggregated route choices,while the fluctuations,whose mechanisms are still unclear,continue to exist until the end.To understand the fluctuations,this paper proposes a route-dependent attraction-based stochastic process model,which shares exactly the same behavioral foundation introduced in Part I of the study(Qi et al.,2023),i.e.,route-dependent inertia and route-dependent preference.The model predictions are carefully compared with the experimental observations obtained from the congestible parallel-route laboratory experiments containing 312 subjects and eight decision-making scenarios(Qi et al.,2023).The results show that the proposed stochastic process model can precisely reproduce the random oscillations both in terms of flow switching and route flow evolution.Subsequently,an approximated model is developed to enhance the efficiency in evaluating the equilibrium distribution,providing a practical tool to evaluate the impacts of transportation policies in both long-and short-term runs.To the best of our knowledge,this paper is the first attempt to model and explain experimental phenomena by introducing stochastic process theories,as well as a successful example of applying experimental economics methodology to improve our understanding of human travel choice behavior.展开更多
To identify time-space locations where public transit infrastructure fails to provide a reliable and timely alternative to private vehicles,this paper proposes a new travel demand-independent persistent homology-based...To identify time-space locations where public transit infrastructure fails to provide a reliable and timely alternative to private vehicles,this paper proposes a new travel demand-independent persistent homology-based method to locate and rank the severity of the modal travel desert.Persistent homology,which is a tool from algebraic topology,is incorporated and the severity of a transit desert ismeasured as a trade-off between its proximity to existing transit infrastructure and the travel time required to travel through it.The proposed method highlights entire regions of cities that are bereft of suitable public transit,providing reasonable estimates even in the absence of travel demand data.This paper presents the techniques and software tools used to study the Stockholm public transit network.The proposed method is potentially useful for city planners to consider the trade-off between how severe a bottleneck is and how difficult the bottleneck is to fix.展开更多
We estimated the effect of three crop strategies on soil health based on 63 functional genes in long-term fields.The keystone microbial phylotypes support the agroecosystem sustainability.Rotation management thrives k...We estimated the effect of three crop strategies on soil health based on 63 functional genes in long-term fields.The keystone microbial phylotypes support the agroecosystem sustainability.Rotation management thrives keystone phylotypes and soil functions.Rotation with soybean is beneficial for the subsequent crops.Given the often-independent study of microbial diversity and function,the comprehensive impact of various cropping patterns on both aspects,as well as the interconnections between them,remains unclear.This gap constrains us from evaluating the impact of soil microbiome shifts on soil health across varying agricultural management regimes.Here,we examined the associations between microbial diversity and soil multifunctionality in three long-term cropping patterns:continuous soybean cropping,soybeancorn rotation,and continuous corn cropping.We targeted 63 functional genes associated with carbon,nitrogen,phosphorus and sulfur cycling to assess soil multifunctionality.Our study demonstrated that the biodiversity and interactions of keystone phylotypes had significant positive associations with multiple soil functional genes,such as organic carbon degradation and fixation,nitrogen fixation and phosphorus solubilization.The analysis of retrieved complete genome revealed that the keystone bacteria identified in our study harbored these functional genes.Moreover,these keystone phylotypes showed associations with the dissipation of herbicide residues.Above all,we revealed that rotation of soybean with corn cropping enhanced a greater diversity of keystone phylotypes and thus fueled soil functions.Collectively,our results highlighted the importance of rotation with soybean in maintaining soil health,which could give a mechanism-based guidance for a sustainable agroecosystem.展开更多
The fragmented design of intelligent transportation systems creates isolated intelligent systems.Resource competition and information gaps are fierce and widespread,worsening traffic issues and degrading overall servi...The fragmented design of intelligent transportation systems creates isolated intelligent systems.Resource competition and information gaps are fierce and widespread,worsening traffic issues and degrading overall service levels.Therefore,empowered by advanced technologies,an evolution toward an autonomous transportation system(ATS)is observed.This evolution aims to develop a collaborative and sustainable ecosystem,prompting interoperability within the cloud-edge-device continuum.展开更多
基金National Natural Science Foundation of China(72101085)China Postdoctoral Science Foundation funded project(2022M722355)Laboratory of Computation and Analytics of Complex Management Systems(CACMS)(Tianjin University)the Natural Science Foundation of Shandong Province(ZR2022MG086).
文摘Laboratory experiments are one of the important means used to investigate travel choice behavior under strategic uncertainty.Many experiment-based studies have shown that the Nash equilibrium can predict aggregated route choices,while the fluctuations,whose mechanisms are still unclear,continue to exist until the end.To understand the fluctuations,this paper proposes a route-dependent attraction-based stochastic process model,which shares exactly the same behavioral foundation introduced in Part I of the study(Qi et al.,2023),i.e.,route-dependent inertia and route-dependent preference.The model predictions are carefully compared with the experimental observations obtained from the congestible parallel-route laboratory experiments containing 312 subjects and eight decision-making scenarios(Qi et al.,2023).The results show that the proposed stochastic process model can precisely reproduce the random oscillations both in terms of flow switching and route flow evolution.Subsequently,an approximated model is developed to enhance the efficiency in evaluating the equilibrium distribution,providing a practical tool to evaluate the impacts of transportation policies in both long-and short-term runs.To the best of our knowledge,this paper is the first attempt to model and explain experimental phenomena by introducing stochastic process theories,as well as a successful example of applying experimental economics methodology to improve our understanding of human travel choice behavior.
文摘To identify time-space locations where public transit infrastructure fails to provide a reliable and timely alternative to private vehicles,this paper proposes a new travel demand-independent persistent homology-based method to locate and rank the severity of the modal travel desert.Persistent homology,which is a tool from algebraic topology,is incorporated and the severity of a transit desert ismeasured as a trade-off between its proximity to existing transit infrastructure and the travel time required to travel through it.The proposed method highlights entire regions of cities that are bereft of suitable public transit,providing reasonable estimates even in the absence of travel demand data.This paper presents the techniques and software tools used to study the Stockholm public transit network.The proposed method is potentially useful for city planners to consider the trade-off between how severe a bottleneck is and how difficult the bottleneck is to fix.
基金financially supported by Zhejiang Provincial Key Research and Development Program of China(Grant No.2023C02004)the National Natural Science Foundation of China(Grant Nos.42225705 and 42177006)China Agriculture Research System of MOF and MARA(Grant No.CARS-04).
文摘We estimated the effect of three crop strategies on soil health based on 63 functional genes in long-term fields.The keystone microbial phylotypes support the agroecosystem sustainability.Rotation management thrives keystone phylotypes and soil functions.Rotation with soybean is beneficial for the subsequent crops.Given the often-independent study of microbial diversity and function,the comprehensive impact of various cropping patterns on both aspects,as well as the interconnections between them,remains unclear.This gap constrains us from evaluating the impact of soil microbiome shifts on soil health across varying agricultural management regimes.Here,we examined the associations between microbial diversity and soil multifunctionality in three long-term cropping patterns:continuous soybean cropping,soybeancorn rotation,and continuous corn cropping.We targeted 63 functional genes associated with carbon,nitrogen,phosphorus and sulfur cycling to assess soil multifunctionality.Our study demonstrated that the biodiversity and interactions of keystone phylotypes had significant positive associations with multiple soil functional genes,such as organic carbon degradation and fixation,nitrogen fixation and phosphorus solubilization.The analysis of retrieved complete genome revealed that the keystone bacteria identified in our study harbored these functional genes.Moreover,these keystone phylotypes showed associations with the dissipation of herbicide residues.Above all,we revealed that rotation of soybean with corn cropping enhanced a greater diversity of keystone phylotypes and thus fueled soil functions.Collectively,our results highlighted the importance of rotation with soybean in maintaining soil health,which could give a mechanism-based guidance for a sustainable agroecosystem.
基金supported by the National Key Research and Development Program of China(2023YFB4301900)the National Natural Science Foundation of China(52125208)+1 种基金the Guangdong Basic and Applied Basic Research Foundation(2023A1515012895)the Department of Science and Technology of Guangdong Province(2021QN02S161).
文摘The fragmented design of intelligent transportation systems creates isolated intelligent systems.Resource competition and information gaps are fierce and widespread,worsening traffic issues and degrading overall service levels.Therefore,empowered by advanced technologies,an evolution toward an autonomous transportation system(ATS)is observed.This evolution aims to develop a collaborative and sustainable ecosystem,prompting interoperability within the cloud-edge-device continuum.
