Proposed Methodology for Dynamic Schedule Compression

2007 ◽  
Author(s):  
Jaesung Lee ◽  
Ralph D. Ellis ◽  
Jae-Ho Pyeon
Keyword(s):  
Schedule Compression ◽  
Dynamic Schedule

Theodore Roosevelt (CVN 71) Construction Schedule Compression

1986 ◽  
Vol 2 (02) ◽  
pp. 59-62
Author(s):  
Irving D. Halper
Keyword(s):  
Business Strategy ◽  
Sole Source ◽  
Industrial Processes ◽  
Aircraft Carrier ◽  
Theodore Roosevelt ◽  
Shipbuilding Industry ◽  
Ship Construction ◽  
Schedule Compression ◽  
Construction Schedule ◽  
Increases In Risk

This paper examines the environment in which improvements in ship construction can occur and looks at the type of planning that must be done to ensure benefits are realized. The Navy is now the major customer of the U.S. shipbuilding industry, and even with the increased emphasis on competitive procurement, by necessity, contracts for a significant amount of sole-source ship construction will exist due to technical or facility constraints. For these contracts, as well as many others, the shipbuilder has a limited incentive to accept the increases in risk inherent in changing his business strategy and existing industrial processes. Recognizing this problem, the Navy began, successfully, to change the environment for aircraft carrier construction. This paper describes the Navy's efforts.

We Never Built Small Modular Reactors (SMRs), but What Do We Know About Modularization in Construction?

2018 ◽  
Author(s):  
Benito Mignacca ◽  
Giorgio Locatelli ◽  
Mahmoud Alaassar ◽  
Diletta Colette Invernizzi
Keyword(s):  
Nuclear Power ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Project Managers ◽  
Schedule Compression ◽  
Small Modular Reactors ◽  
Key Characteristics ◽  
Additional Costs ◽  
Structured Knowledge ◽  
The Cost

The key characteristics of small modular reactors (SMRs), as their name emphasized, are their size and modularity. Since SMRs are a family of novel reactor designs, there is a gap of empirical knowledge about the cost/benefit analysis of modularization. Conversely, in other sectors (e.g. Oil & Gas) the empirical experience on modularization is much greater. This paper provides a structured knowledge transfer from the general literature (i.e. other major infrastructure) and the Oil & Gas sector to the nuclear power plant construction world. Indeed, in the project management literature, a number of references discuss the costs and benefits determined by the transition from the stick-built construction to modularization, and the main benefits presented in the literature are the reduction of the construction cost and the schedule compression. Additional costs might arise from an increased management hurdle and higher transportation expenses. The paper firstly provides a structured literature review of the benefits and costs of modularization divided into qualitative and quantitative references. In the second part, the paper presents the results of series of interviews with Oil & Gas project managers about the value of modularization in this sector.

scholarly journals A Reliability Profile Based Low-Complexity Dynamic Schedule LDPC Decoding

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Ruijia Yuan ◽  
Tianjiao Xie ◽  
Zhongfeng Wang
Keyword(s):  
Low Complexity ◽  
Ldpc Decoding ◽  
Dynamic Schedule

scholarly journals Multi-dimensional optimization model for schedule fast-tracking without over-stressing construction workers

2019 ◽  
Vol 46 (12) ◽  
pp. 1160-1173 ◽  
Author(s):  
Zinab Abuwarda ◽  
Tarek Hegazy
Keyword(s):  
Construction Projects ◽  
Construction Workers ◽  
Superior Performance ◽  
Schedule Optimization ◽  
Fast Tracking ◽  
Schedule Compression ◽  
Complex Projects ◽  
Proposed Model ◽  
Technique Comparison

Fast-tracking is an important process to speed the delivery of construction projects. To support optimum fast-tracking decisions, this paper introduces a generic schedule optimization framework that integrates four schedule acceleration dimensions: linear activity crashing; discrete activity modes of execution; alternative network paths; and flexible activity overlapping. Because excessive schedule compression can lead to space congestion and overstressed workers, the optimization formulation uses specific variables and constraints to prevent simultaneous use of overlapping and crashing at the same activity segment. To handle complex projects with a variety of milestones, resource limits, and constraints, the framework has been implemented using the constraint programming (CP) technique. Comparison with a literature case study and further experimentation demonstrated the flexibility and superior performance of the proposed model. The novelty of the model stems from its integrated multi-dimensional formulation, its CP engine, and its ability to provide alternative fast-track schedules to strictly constrained projects without overstressing the construction workers.

scholarly journals Robust dynamic schedule coordination control in the supply chain

2016 ◽  
Vol 94 ◽  
pp. 18-31 ◽  
Author(s):  
Dmitry Ivanov ◽  
Alexandre Dolgui ◽  
Boris Sokolov
Keyword(s):  
Supply Chain ◽  
Coordination Control ◽  
Schedule Coordination ◽  
Dynamic Schedule
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