Retaining an intact riparian buffer during harvesting remains a challenge in some of the steeper, less accessible areas of planted forests in New Zealand, where roading constraints necessitate the extraction of timber across headwater catchments.
This multi-modal network can be modeled as a multi-layer network [31] for dynamic traffic assignment with integrated management strategies, where travelers using different modes have mode-specific penalty or costs and need to consider service or road capacity constraints at different layers.
One side -- the "half good" side behind Prime Minister Zhu Rongji -- while stifling political freedom at home, wants to take the capitalist road, loosen economic constraints, do business with the U.S. and join the W.T.O.
The problem has been modeled as a Clustered Vehicle Routing Problem with Pickups and Deliveries, Asymmetric Variable Costs, Forbidden Roads and Cost Constraints.
Hideo Sasaki's architectural firm Sasaki Associates, Inc. found in the February 2010 master plan that the campus's seismic risk, uneven terrain, lack of parking spaces, small classrooms, and pedestrian-unfriendly roads are major constraints for future campus development.
Combined with road network structure, capacity constraints, and load balance constraints, vehicle routing model for spreading deicing salt is constructed, which can be solved by a designed genetic algorithm.
This strongly suggests that the challenging characteristics of vehicular networks, such as unique node mobility, constraints of road topology, need further exploration.
This strongly suggests that the challenging characteristics of vehicular networks need further exploration, including unique node mobility, constraints of road topology.
Previous studies indicate that farmers' participation in marketing is constrained by productivity (Janvry et al. 1991; Fafchamps 1992), poverty, information, and physical constraints including road and storage facilities.
