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In this paper there were presented some issues connected with Lean concept in improving of production processes. The research was conducted on the example of production enterprises that function in metal industry. The enterprises for the research were chosen purposefully, because of two reasons - the possibility to obtain information on the researched area and the assumption that these enterprises use the lean concept instruments. The questionnaire was the research tool. The goal of the research was to examine, what are the most expected advantages from implementing of lean concept methods, and what were the real advantages, that occurred in production system of researched enterprises. The authors presented the quantitative results of the study and carried out an analysis of the response in the form of a matrix. The developed matrix extended the knowledge about the distribution of observed benefits. It enables to indicate which advantages occurred in the enterprises expecting and not expecting some benefits.
The methods of lean manufacturing primarily designed for businesses dealing with serial production, are also used in other types of production. However the concept of lean production was not designed for these types of businesses, they are utilized only partially. Paper focuses on applying methods of lean concept in companies which are dealing with mass production and their options of exchange for other methods in the event of disagreement. Basis of the article is a list of lean methods with its description and its utilization in practice. The questionnaire was utilized to identify information from the practice. Based on this survey were identified the critical methods that are no longer appropriate for companies dealing with mass production. However, there are alternative methods of describing the problem. It is possible to say that companies are trying to get closer to their goal by modification of the basic concepts. And the concept of Lean Enterprise serves as a standard.
The article presents identification of problems during the implementation of Lean concept in small and medium-sized enterprises in Poland. Although the Lean methodology is recognized all over the world as one of the best and most effective ways to improve the functioning of enterprises, in Polish conditions exist serious problems with its implementation. Development of small and medium-sized enterprises is regarded as one of the measures of economic growth and a sign of healthy competition. The needs of the economy and the limited resources characterizing this enterprise sector imply the need to adjust its capacities to the requirements of the turbulent environment. In the analysis of problems there were used the results of questionnaire surveys conducted among representatives of the companies participating in the largest Lean conference in Central Europe.
Supply chain management (SCM), for the past two decades, has been identified by manufacturing industries as a new way of doing business. Construction, similar to manufacturing and other services industries, is experiencing emerging trends that are aimed at giving ultimate satisfaction to the end user. Lean construction is a way to design production systems in order to minimize waste of materials, time and efforts which generate maximum possible amount of value. This research looked into how SCM can benefit the Ghanaian building construction industry through the application of lean concept. The purpose of this study is to assess the level of collaboration and coordination in planning of activities among construction industry players and investigate into the sources of waste in construction. The study, employing survey and case study approaches, collected data through structured questionnaires, in-depth interviews and direct observation of ongoing projects on KNUST campus. One sample t-test was used to analyse the data. The findings pointed out that the level of coordination and collaboration in planning among industry players were very appreciable though there still exist room for improvement.
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