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The feasibility study and design is a key for engineering assets sustainability. The sustainability-based project objectives are generally derived from a project environment investigation and then relayed to the criterions or standards associated to alternatives assessment and optimization excused by planer or designer. However, it is difficult to undertake a sustainability-based planning or designing...
To meet the physical limits of construction resources, to avoid day-to-day fluctuation in resource demands, and to maintain an even flow of application for construction resources, resource leveling is needed in the construction industry. A new idea was put forward that is the classificatory criteria of the new evaluation indexes and computational method of the dynamic evaluation indexes are redefined,...
In order to solve the problem of generating and optimizing the assembly sequences of a complex assembly, the oriented-mating graph model of the assembly and the related mating matrix are created. Then an improved ant colony optimization is used to solve the ASP problem. In the algorithm, the local and global pheromones are updated to help the ant colony find the global optimizations more quickly....
Effective forest management very much depends on the construction and maintenance of an appropriate forest road network. Road building is essential to the extraction of multiple-use forest resources; hence, roads must be designed to satisfy a whole range of needs. However, careless logging and road building have been the main causes for environmental degradation in many forest regions. The aim of...
Optimizing an algorithm's parameter set for evolutionary multi-objective optimization (EMO) algorithms is not performed regularly until now. However, it could have been learned from single-objective optimization that doing so yields remarkable improvements in algorithm's performance. Here, the sequential parameter optimization (SPO) framework is exemplarily applied to one EMO algorithm (EMOA) with...
QoS (Quality of Service) guarantee has emerged as one of the most important technologies for the grid computing. Because the existing QoS control systems focus on designing independent executive management system, some problems still remain to be addressed, including low efficiency, bad scalability, and inadequate QoS automatic control. To address the above problems, this paper presents a novel SLA-driven...
The evaluation of corporation information systems is the key of the research on corporation information systems, which are complicated social technological systems, the estimate of them is a complicated social process. The multiple subjects, multiple stages and multiple levels of corporation information systems estimate decide the complexity in evaluating them. The complexity in evaluating corporation...
The mining programming of accumulated bauxite should comprehensively consider the site selection and rational utilization of resources. The mixed integer programming model on optimization of site selection and rational ore blending was constructed on the basis of the theories of logistics planning, operations research, etc. Take Taipingbei mine in Pingguo bauxite as the example, the results which...
Corporation information systems estimate is the key as well as thorny point of the research on information systems. As corporation information systems are complicated social technological systems, the estimate of them is a complicated social process. The multiple subjects, multiple stages and multiple levels of corporation information systems estimate decide the complexity in evaluating them. The...
This paper proposes a project prioritizing method for investment decision in electrical energy distribution networks, based on a multi objective genetic algorithm. This problem is associated with the planning of electrical energy distribution networks, involving specifically the projects prioritization for the determination of an optimized indicative plan of investment in a short term horizon. This...
Time-cost optimization problem is one of the most important aspects of construction project planning and control. And the relationship between direct cost and activity duration is the base of project planning and control. Nowadays, when construction planners made an optimization of time-cost, they assumed the rate of direct cost is linear in order to calculate it simply. But in fact the direct cost...
With the rapidly changing, time limit has become one of the key factor for the project to the success. So the research about how to control and optimize the schedule of the project has been hot. We have applied the advanced control methods and optimization software to the project, but the proportion of the project delay is still high. According to survey, we find that the project delay is not caused...
A construction project composed of a series unique events is a group of given goals set which should be achieved by the limited resources during a certain period. These characteristics of the construction project put forward a number of requirements to project managers, especially in the control of construction time and cost. Fortunately, the network graph provides a reasonable method of project plan...
Smart growth plays a significant role in solving a series of problems in rapidly urban development in China. Optimal allocation in land resource is the key for the realization of smart growth. In view of this, taking Yixing in Jiangsu Province, China for an example, this paper attempted to make a study on urban smart growth based on optimal allocation in land resource. The main objective of this study...
Urban planning is a multi-objective problem. The traditional urban planning optimization decision aims to solve a single-objective optimization problem with one or more bounded-constraints, such as traffic, environment, etc. To satisfy the individual requirement for decision-makers in urban planning, in this paper, we analyze the limitation of the traditional methods and propose a new approach that...
An optimization technique to solve distribution network planning (DNP) problem is presented. This is a very complex mixed binary nonlinear programming problem. A constructive heuristic algorithm (CHA) aimed at obtaining an excellent quality solution for this problem is presented. In each step of the CHA, a sensitivity index is used to add a circuit or a substation to the distribution network. This...
To observe, analyze and control large scale distributed systems and the applications hosted on them, there is an increasing need to continuously monitor performance attributes of distributed system and application states. This results in application state monitoring tasks that require fine-grained attribute information to be collected from relevant nodes efficiently. Existing approaches either treat...
Construction project is regarded as a complex network system in which quality reliability is an important index to express quality grade, so quality -cost Optimization is one of the most crucial aspects of construction project planning, which in fact is a multi objective optimization problem. A mathematical model is established and an evolutionary algorithm genetic algorithm (GA) was employed to solve...
This paper addresses the design and optimization of robotically-reconfigurable structures from an algorithmic point of view. First, we address the algorithmic challenge of searching for a sequence of structural modifications that can transform a given modular structure into a new target structure that serves a different function. The target structure is not explicitly specified, only its desired function,...
The resource mean square deviation of network planning is selected to measure the balance of resource. By setting the mean square deviation of resources to objective functions, and by the 2-norm is being introduced into the objective space, a function used for evaluating the balance optimization of multi-resource network planning is established, so the issue of multi-objective optimization is transferred...
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