Based on the sparse literature investigating the cost of ERP systems implementation, our research uses data from a survey of Swiss SMEs having implemented ERP in order to test cost drivers. The main innovation is the proposition of an additional classification of cost drivers that focuses on the enterprise itself, rather than on ERP. Particular attention is given to consulting fees as a major f...

Parking is an underappreciated issue in urban traffic modeling and control, and drivers searching for a parking space can contribute substantially to congestion. New technologies and algorithms aim to smooth the parking search process, using sensors for dynamic pricing, transmitting availability information to drivers, or to allow advance reservation of spaces. However, the parking search proce...

The taxi service systems in big cities are immensely complex due to the interaction and self-organization between taxi drivers and passengers. An inefficient taxi service system leads to more empty trips for drivers and longer waiting time for passengers, and introduces unnecessary congestion to road network. Although understanding the performance of urban taxi service system is important, the ...

Often network users are not perfectly rational, especially when they are satisficing—rather than optimizing— decision makers and each individual’s perception of the decision environment reflects personal preferences or perception errors due to lack of information. While the assumption of satisficing drivers has been used in modeling route choice behavior, this research uses a link-based percept...

To improve the overall efficiency, from a supply chain perspective, manufactures are focusing their activities around a limited number of coreprocesses. Consequently the internal processing degree is reduced. When the degree of internal processing is reduced, the organizational balance between manufacturing processes and cross-organizational integration processes shifts, and this is reflected i...

We consider a conservation law model of traffic flow on a network of roads, where drivers choose their departure times in order to minimize the sum of a departure cost and an arrival cost. Drivers can have different origins and destinations, and different cost functions. Under natural assumptions, two main results have been established: (i) the existence of a globally optimal solution, minimizi...