In snow-icy road environment, the survey data indicate that the largest decrease in traffic flow running characters occurs when snow and ice begin to accumulate on the road surface. Saturation flow is decreased by 16%...In snow-icy road environment, the survey data indicate that the largest decrease in traffic flow running characters occurs when snow and ice begin to accumulate on the road surface. Saturation flow is decreased by 16% , speed is decreased by 30% , and start-up lost time is increased by 27%. Based on the signal control theory of HCM and Webster, the character values of traffic flow in different urban road environments were investigated, and the evolvement regularity of signal control parameters such as cycle, split, green time, offset, yellow time and red time in snow-icy road environment was analyzed. The impact factors and the changes in the scope of signal control parameters were achieved. Simulation results and practical application show that the signal control plan of road enviromnent without snow and ice will increase the vehicle delay, stop length and traffic congestion in snow-icy road environment. Thus, the traffic signal control system should address a suitable signal control plan based on different road environments.展开更多
Warehouse management, as a higher vocational course integrating theory and practice, is of extreme importance to training the professional personnel logistics management. In this paper, under the premise of the teachi...Warehouse management, as a higher vocational course integrating theory and practice, is of extreme importance to training the professional personnel logistics management. In this paper, under the premise of the teaching objective of course Warehouse Management, and based on analyzing the disadvantages in the current teaching of the course, the teaching mode integrating theory and practice courses, and teaching and learning is discussed, so this paper is of great significance to the design of the course teaching modes in higher vocational colleges.展开更多
Logistics management is a very practical professional. How to cultivate applied Talents for the logistics industry needs to is a question to logistics management professional.This paper talk about the practice in term...Logistics management is a very practical professional. How to cultivate applied Talents for the logistics industry needs to is a question to logistics management professional.This paper talk about the practice in terms of personnel training mode, curriculum system, practice and practice base construction and faculty building according to the actual situation of their own practice of logistics experience.展开更多
基金Sponsored by the National Basic Research and Development Program of China(Grant No.2006CB705505) Research Fund for the Doctoral Program of Higher Education of China(Grant No.200802131012)
文摘In snow-icy road environment, the survey data indicate that the largest decrease in traffic flow running characters occurs when snow and ice begin to accumulate on the road surface. Saturation flow is decreased by 16% , speed is decreased by 30% , and start-up lost time is increased by 27%. Based on the signal control theory of HCM and Webster, the character values of traffic flow in different urban road environments were investigated, and the evolvement regularity of signal control parameters such as cycle, split, green time, offset, yellow time and red time in snow-icy road environment was analyzed. The impact factors and the changes in the scope of signal control parameters were achieved. Simulation results and practical application show that the signal control plan of road enviromnent without snow and ice will increase the vehicle delay, stop length and traffic congestion in snow-icy road environment. Thus, the traffic signal control system should address a suitable signal control plan based on different road environments.
文摘Warehouse management, as a higher vocational course integrating theory and practice, is of extreme importance to training the professional personnel logistics management. In this paper, under the premise of the teaching objective of course Warehouse Management, and based on analyzing the disadvantages in the current teaching of the course, the teaching mode integrating theory and practice courses, and teaching and learning is discussed, so this paper is of great significance to the design of the course teaching modes in higher vocational colleges.
文摘Logistics management is a very practical professional. How to cultivate applied Talents for the logistics industry needs to is a question to logistics management professional.This paper talk about the practice in terms of personnel training mode, curriculum system, practice and practice base construction and faculty building according to the actual situation of their own practice of logistics experience.
