Bi-level programming modeling and hierarchical hybrid algorithm for antimissile dynamic firepower allocation problem with uncertain environment

2016 ◽  
Vol 20 (1) ◽  
pp. 287-306
Author(s):  
Cheng-li Fan ◽  
Qing-hua Xing ◽  
Qiang Fu ◽  
Zhi-gang Zou
Keyword(s):  
Hybrid Algorithm ◽  
Allocation Problem ◽  
Uncertain Environment

scholarly journals Model and Algorithm for Container Allocation Problem with Random Freight Demands in Synchromodal Transportation

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Yan Xu ◽  
Chengxuan Cao ◽  
Bin Jia ◽  
Guangzhi Zang
Keyword(s):  
Hybrid Algorithm ◽  
Numerical Experiments ◽  
Programming Model ◽  
Transportation Network ◽  
Capacity Allocation ◽  
Allocation Problem ◽  
Operational Level ◽  
Proposed Model ◽  
Encode Method ◽  
Effectiveness And Efficiency

This paper aims to investigate container allocation problem with random freight demands in synchromodal transportation network from container carriers’ perspective. Firstly, the problem is formulated as a stochastic integer programming model where the overall objective is to determine a container capacity allocation plan at operational level, so that the expected total transportation profit is maximized. Furthermore, by integrating simulated annealing with genetic algorithm, a problem-oriented hybrid algorithm with a novel gene encode method is designed to solve the optimization model. Some numerical experiments are carried out to demonstrate the effectiveness and efficiency of the proposed model and algorithm.

Articulating a strategic approach to face complexity in design projects

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Luca SIMEONE ◽  
David DRABBLE ◽  
Giorgia IACOPINI ◽  
Kirsten VAN DAM ◽  
Nicola MORELLI ◽  
...  
Keyword(s):  
Complexity Theory ◽  
Wicked Problems ◽  
Theory Of Change ◽  
Strategic Action ◽  
Community Initiatives ◽  
Uncertain Environment ◽  
Strategic Approach ◽  
Design Projects

In today’s world of global wicked problems, constraints and imperatives imposed by an external and uncertain environment render strategic action a quite complex endeavour. Since the 1990s, within community initiatives and philanthropic projects, the construct of Theory of Change has been used to address such complexity. Theory of Change can be defined as the systematic and cumulative study of the links between the activities, outcomes, and context of an intervention. The area of focus for this paper is to explore whether Theory of Change can support more strategic approaches in design. In particular, the paper examines how Theory of Change was applied to DESIGNSCAPES - a project oriented, among other things, toward offering a supporting service for all those city actors interested in using design to develop urban innovation initiatives that tackle complex issues of broad concern.

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