Evaluation Of A Simulation Which Demonstrates How ' Lowering The River Can Reveal The Rocks '

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1. Problem Statement
The purpose of this research is to develop and test a simulation which demonstrates how ‘lowering the river can reveal the rocks’, i.e. how systematically reducing buffers in a process can lead to discovery of its scope for improvement.
Opportunities of improvement always exist in complex processes like the ones that occur in the construction industry. Yet, they are not acted upon because they are not always discovered. Taiichi Ohno had a solution for this, which was to “lower the river to reveal the rocks”, which implies that the buffers of a system, like time, capacity, inventory, and money must be decreased in order to find where variability lies. Opportunities of improvement can hence be found, and variability can
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3. Review of Literature
3.1 Continuous Improvement
The philosophy behind kaizen is often credited to Dr. W. Edwards Deming. Kaizen, also known as continuous improvement, is an approach to work that systematically seeks to achieve incremental changes in processes in order to improve efficiency and quality (Rouse 2009). It is an effort to improve products, services, or processes, and is also a method for identifying opportunities for streamlining work. If the workflow is made efficient, it could save valuable resources, and hence help in the reduction of waste in the forms of cost, time and defects.
Continuous improvement is a great way for companies to identify opportunities and integrate improvements into their processes. Usually, projects which involve complexities like shifting deadlines, and changing priorities have a lot of undiscovered opportunities to improve. The practice of continuous improvement was formalized in manufacturing, but now is being implemented by different industries to improve their own processes. The philosophy can also be applied to design and construction.

3.2 Lower the River to Reveal the Rocks
In a lean system, the required attitude is for problems to be made visible and opportunities for improvement to be sought after. Taiichi Ohno said, “Lower the river to reveal the rocks”. This was his method of perceiving continuous
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