Environmental and Social Problems and Countermeasures in Transportation System under Resource Constraints

Abstract

With the rapid development of urban economy and the acceleration of urbanization, the demand for urban traffic is increasing rapidly. The single traffic-oriented planning does not take into account the requirements of traffic development on resources and the impact on the environment. The traffic construction of most cities can not fully meet the standard of ecotype. In this paper, the vehicle distribution route optimization problem under multiresource constraints such as vehicle energy capacity and vehicle loading capacity is studied, and the static and dynamic models of distribution route optimization under multiresource constraints are established. In the static distribution route optimization model, the distribution route optimization problem with subloops is solved by modifying the network structure and adding virtual resource points. In the dynamic model, the spatiotemporal network model is used to avoid the generation of subloops, and the description of the vehicle distribution route planning problem is more intuitive and accurate. The model enriches the vehicle distribution route selection scheme at the cost of expanding the model scale. And it can solve the time when the vehicle arrives and leaves the customer point. This paper provides a good countermeasure for solving the environmental and social problems in the transportation system under the condition of resource constraints.

Multiobjective-Based Decision-Making for the Optimization of an Urban Passenger Traffic System Structure

“…To achieve sustainable urban development, the road resource capacity constraint is one of the conditions for the optimization of an urban passenger traffic structure [44,45]. The dynamic floor space of different modes of passenger transport must meet the road land requirements in the planning year.…”

Network Security Problems and Countermeasures of Hospital Information System after Going to the Cloud

“…In the detailed investigation of the hospital information system, it is necessary to clarify the different data partitions of the information system, such as which databases exist in the information system and what is the specific application purpose of the database, which needs to be emphasized in the investigation. Because the application value of the database is obtained based on the investigation, it can provide a reference for the determination of the security level of the database within the information system Determination of the security level of the information system [ 15 ]: under the guidance of basic survey data, the internal database of the information system and the use value of the data are analyzed, and the security level is evaluated. In this way, the security level evaluation result can provide a reference for the design and construction of the network security structure of the information system Construction of network security structure based on security evaluation level [ 16 ]: based on the evaluation results, it can be seen that different data security levels have different requirements.…”

“…(2) Determination of the security level of the information system [15]: under the guidance of basic survey data, the internal database of the information system and the use value of the data are analyzed, and the security level is evaluated. In this way, the security level evaluation result can provide a reference for the design and construction of the network security structure of the information system…”

Longitudinal Functional Safety Analysis and Algorithm Design of Traffic Jam Pilot

“…People travel more conveniently, but the traffic jams are getting more serious. Traffic jams increase people's commuting time and reduce the comfort of people's travel [1].…”