scholarly journals A risk-cost optimization model for selecting human resources in construction projects

2019 ◽  
Vol 1 (11) ◽  
Author(s):  
Hamidreza Abbasianjahromi ◽  
Soheil Hosseini
Keyword(s):  
Human Resources ◽  
Optimization Model ◽  
Construction Projects ◽  
Cost Optimization ◽  
Risk Cost

scholarly journals COST OPTIMIZATION OF MULTIUNIT CONSTRUCTION PROJECTS USING LINEAR PROGRAMMING AND METAHEURISTIC-BASED SIMULATED ANNEALING ALGORITHM

2019 ◽  
Vol 25 (8) ◽  
pp. 848-857
Author(s):  
Michał Podolski ◽  
Bartłomiej Sroka
Keyword(s):  
Simulated Annealing ◽  
Optimization Model ◽  
Construction Projects ◽  
Simulated Annealing Algorithm ◽  
High Efficiency ◽  
Programming Model ◽  
Work Group ◽  
Cost Optimization ◽  
Indirect Costs ◽  
Engineering Structures

The article presents the cost optimization model for multiunit construction projects. Multiunit projects constitute a special case of repetitive projects. They consist in the realization of many different, when it comes to size, types of residential, commercial, industrial buildings or engineering structures. Due to the specific character of construction works, actual schedules of such projects should not only take into account real costs of construction, but also be subject to specific restrictions, e.g. deadlines for the completion of units imposed by the investor. To solve the NP-hard problem of choosing the order of units’ construction there was metaheuristic algorithm of simulated annealing used. The objective function in the presented optimization model was the total value of the project cost determined on the basis of the mathematical programming model, taking into account direct and indirect costs, costs of missing deadlines and costs of work group discontinuities. In the article, an experimental analysis of the proposed method of solving the optimization task was carried out in a model that showed high efficiency in obtaining suboptimal solutions. In addition, the operation of the proposed model has been presented on a calculation example. The results obtained in it are fully satisfying.

A cost optimization model for 100% renewable residential energy supply systems

Energy ◽  
2012 ◽  
Vol 48 (1) ◽  
pp. 118-127 ◽  
Author(s):  
Christian Milan ◽  
Carsten Bojesen ◽  
Mads Pagh Nielsen
Keyword(s):  
Optimization Model ◽  
Energy Supply ◽  
Cost Optimization ◽  
Residential Energy ◽  
Supply Systems ◽  
Energy Supply Systems

Time–Cost Optimization Model Considering Float-Consumption Impact

2015 ◽  
Vol 141 (5) ◽  
pp. 04015001 ◽  
Author(s):  
Rana A. Al Haj ◽  
Sameh M. El-Sayegh
Keyword(s):  
Optimization Model ◽  
Cost Optimization ◽  
Time Cost

scholarly journals A Cost Optimization Model for Multiresource Leveling Problem without Project Duration Constraint

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Qingyou Yan ◽  
Qian Zhang ◽  
Xin Zou
Keyword(s):  
Optimization Model ◽  
Cost Optimization ◽  
Resource Usage ◽  
Project Duration ◽  
Resource Demand ◽  
Resource Leveling ◽  
Proposed Model ◽  
Liquidated Damages ◽  
The Relationship

The study of traditional resource leveling problem aims at minimizing the resource usage fluctuations and obtaining sustainable resource supplement, which is accomplished by adjusting noncritical activities within their start and finish time. However, there exist limitations in terms of the traditional resource leveling problem based on the fixed project duration. This paper assumes that the duration can be changed in a certain range and then analyzes the relationship between the scarce resource usage fluctuations and project cost. This paper proposes an optimization model for the multiresource leveling problem. We take into consideration five kinds of cost: the extra hire cost when the resource demand is greater than the resource available amount, the idle cost of resource when the resource available amount is greater than the resource demand, the indirect cost related to the duration, the liquidated damages when the project duration is extended, and the incentive fee when the project duration is reduced. The optimal objective of this model is to minimize the sum of the aforementioned five kinds of cost. Finally, a case study is examined to highlight the characteristic of the proposed model at the end of this paper.

Sign in / Sign up

Export Citation Format

Share Document