Search results

Considers the response of US firms to the recent decline in productivity, growth etc and the subsequent adoption of just in time manufacturing pioneered by Japanese industry. Examines the concentration on the reduction in time and costs of the early stages of the product life cycle and the flexibility this allows the subsequent pricing strategies. Highlights the emphasis placed on distribution scheduling and the consolidation of transportation services. Concludes that US firms have accepted that JIT and cost and time reduction programs have been necessary in order to compete in the 1990s.

To compare the performance of a new hybrid manufacturing system (HMS) with a conventional cellular manufacturing system (CMS). The hybrid system is a combination of the cellular manufacturing and job shop.

A hypothetical manufacturing facility with eight machines and 20 parts is used as a case. Simulation models are developed for two manufacturing systems. A multi‐factor comparison is carried out to test the performance of the systems under different scenarios.

It was found that group scheduling rules (GSR) and the manufacturing system design factors have significant impact on the performance of the system. In particular, the hybrid system shows its best performance when the MSSPT GSR is applied, whereas the cellular system is superior when DDSI is implemented. The results also demonstrate that, by adding non‐family parts to the production schedule of the HMS, significant benefits in the performance measures can be attained.

The conclusion cannot be generalized, as the result is dependent upon the input data and the size of the problem.

The application may be limited to certain industry sectors. Further studies may be needed to identify the appropriate industry.

While the majority of the literature focuses on either a job shop or a pure CMS, this paper has a distinctive approach that allows the combined use of both systems. This could be a useful transitional approach from one system to the other.

In this paper, the authors elaborate the notion of a hybrid factory: factories in which some production capacity is dedicated to process‐oriented manufacturing, and some is dedicated to product‐oriented manufacturing. We present the results of a field study of one such factory and, using it as an example, develop a list of eight issues that may arise as a part of implementing and managing a hybrid factory. Where possible, we tie these issues into existing research streams. We show how our field site addressed these issues and, based on their experience, suggest new areas for investigation by researchers. An examination of the way our field site implemented and managed a hybrid factory also provides insight for managers facing similar situations.

Examines Just‐in‐Time (JIT) from its evolution as a Japanese concept through to a review of its philosophy and implementation. Cites several techniques of implementation. Includes a review of the early work of various researchers and practitioners. Concludes that JIT is a very effective manufacturing philosophy which is universal in nature encompassing all aspects of manufacturing. Suggests a few deficiencies in current literature.

This study aims to demonstrate the application of process mapping and simulation, using popular software tools, by examining a paper sheet cutting operation.

An integrated approach is utilized to model a sheeting operation at Advance Agro, PCL, Thailand, a pulp and paper manufacturer. The sheeting operation is one of the most critical operations. The redesigned sheeting operation resulted in setup time reduction. This was carried out by studying the process map, data analysis, and simulation of the redesigned operation (using Visio, Excel and Arena software) before a real implementation at the manufacturing plant. The simulation of redesigned sheeting process showed increase in productivity and annual cost savings.

Case experiences indicate that combining process mapping and data analysis with simulation is beneficial. The computer‐based integrated approach successfully reduces the risk of ineffectiveness of the redesigned critical manufacturing operation. In the new improved operation, higher machine utilization results in both reduced lead time and availability of more free time for operators to carry out quality inspections leading to better quality products.

The computer simulation of redesigned sheeting operation showed existing machines can handle more orders and result in higher production and lower unit cost than the existing sheeting operation. The productivity increase for the manufacturer with the new sheeting strategy was expected to be worth US $450,000 annually.

The study makes a business case that process improvement can be effectively accomplished with an integrated approach of using widely available inexpensive and user‐friendly computer‐based tools. It also showcases a good practice in manufacturing system redesign.

Overall equipment effectiveness (OEE) is a performance indicator that is been used to measure manufacturing productivity. The purpose of this paper is to propose the operating room effectiveness for hospital operating rooms (ORs), adapted from the OEE, to measure performance and identify losses based on lean health-care principles.

The present study is an exploratory, descriptive and applied research work. Literature review, documents of the hospital, observation and interviews with employees of a large university hospital in southern Brazil were analyzed to organize the proposed effectiveness indicator. After that, historical data of the ORs was collected and the usefulness of the indicator was analyzed. The indicator was applied for 10 months and validated with an expert committee from the hospital.

The present study describes an adaptation of a performance indicator to ORs of hospitals, allowing to classify its types of operational losses in a lean health-care context. The application of this indicator and the development of improvement actions to a university hospital, resulted in operational efficiency gains of 12 per cent and estimated annual savings of US$400,000.

ORs are a critical service for hospitals. This paper presents a new way to measure the performance of ORs and identify their main types of wastes. It also shows how to implement it and the potential gains of its application. The main research limitations are related to technical analysis of care data from doctors and nurses involved.

This paper fulfills the need to study how ORs performance can be measured and its operational wastes can be identified. In addition, this paper classifies the planning, performance and quality related losses, which can be used by researchers and practitioners to improve the performance of operation rooms.

This paper describes an exploratory research effort to analyze and classify emerging operations management practices in US manufacturing. Using a survey of senior materials and operations management professionals in the United States, this study investigates manufacturers' supplier assessment practices, new product design and development practices, just‐in‐time practices, and quality practices. This study also identifies practices that share common variance‐covariance characteristics and to what extent the observed practices are linked to their underlying factors by means of exploratory factor analysis. Finally, bivariate correlation analysis is used to examine the relationships of the factors.

The purpose of this paper is to investigate the adaptation of lean production and assess its current state of practice in selected plants in electronics, telecommunication, wireless, computer, food/beverage, garment, pharmaceutical, chemical, petroleum, printing, A/C and heating, and a few others in China.

An assessment tool is used to evaluate actual manufacturing practice related to key areas of inventory; team approach; processes; maintenance; layout/handling; suppliers; setups; quality; and scheduling and control. Manufacturing executives at manufacturing plants answered 40 questions in the assessment. Each response in the assessment is scored and a total score for each plant is recorded by adding average scores for all areas.

Application of lean production in China started in the late 1970s in the automotive industry, much earlier than by American and European manufacturers. The results of assessments show that the petroleum industry is in lead among all industries, followed by computer, telecommunication/wireless, and electronics industries. The findings from lean production system design‐related questions show low scores in layout design, volume/mix flexibility, setup, visual factory, and point‐of‐use delivery. However, plants earned high scores in materials flow, scheduling/control, on‐time delivery of finished goods, and overall defect rate. The findings have some similarity with recent studies about Chinese manufacturing firms' performance and competitiveness.

Research findings are from some selected manufacturing plants in China and they should not be interpreted as an indicator of that particular sector in China.

This study investigates actual lean manufacturing practice and performance in Chinese plants.

The inventory management system of a discount retail store was examined. A just‐in‐time inventory management model and a quantity discount model were used to determine the appropriateness of each model for the retail outlet. Based on the calculations performed, it was determined that utilizing a retail just‐in‐time (JIT) policy is unrealistic. Customer demands constantly change, and shortages due to stock‐outs can cause huge losses in profits, especially when customers are lost to competitors. Additionally, the quantity discount model provides the lowest total cost for a retail outlet. Not only are the prices cheaper when inventory is bought in large quantities, but shortages or stock‐outs are rare. The optimal solution for a retail store is implementing the quantity discount method.

Just‐in‐time (JIT) production has received a great deal of attention worldwide in the last couple of decades. Most research has examined the effects of the JIT philosophy and practice in developed countries (such as the USA, Canada, and Australia). Barring a couple of studies, not much attention has been paid to the study of the implementation of JIT in less developed countries. Based on a survey of 48 manufacturing firms in Ghana, this paper examines the implementation of JIT production systems in a developing country. The results suggest that Ghanaian manufacturing firms which have invested in JIT production systems are different from firms that have not invested in JIT production in terms of their efforts in employees’ training, setup time reduction, cellular manufacturing, continuous quality improvement, and supplier partnership. At the same time, JIT firms are not significantly different from non‐JIT firms with regard to the use of measurement systems.