173,352 research outputs found

    "The Shift from Belt Conveyor Line to Work-cell Based Assembly Systems to Cope with Increasing Demand Variation and Fluctuation in The Japanese Electronics Industries"

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    As consumption patterns become increasingly sophisticated and manufacturers strive to improve their competitiveness, not only offering higher quality at competitive costs, but also by providing broader mix of products, and keeping it attractive by launching successively new products, the turbulence in the markets has intensified. This has impelled leading manufacturers to search the development of alternative production systems supposed to enable them operate more responsively. This paper discusses the trend of abandoning the strategy of relying on factory automation technologies and conveyor-based assembly lines, and shifting towards more human-centered production systems based on autonomous work-cells, observed in some industries in Japan (e.g. consumer electronics, computers, printers) since mid-1990s. The purpose of this study is to investigate this trend which is seemingly uneconomic to manufacturers established in a country where labor costs are among the highest in the world, so as to contribute in the elucidation of its background and rationality. This work starts with a theoretical review linking the need to cope with nowadays' market turbulence with the issue of nurturing more agile organizations. Then, a general view of the diffusion trend of work-cell based assembly systems in Japanese electronics industries is presented, and some empirical facts gathered in field studies conducted in Japan are discussed. It is worthy mentioning that the abandonment of short cycle-time tasks performed along conveyor lines and the organization of workforce around work-cells do not imply a rejection of the lean production paradigm and its distinctive process improvement approach. High man-hour productivity is realized as a key goal to justify the implementation of work-cells usually devised to run in longer cycle-time, and the moves towards this direction has been strikingly influenced by the kaizen philosophy and techniques that underline typical initiatives of lean production system implementation. Finally, it speculates that even though the subject trend is finding wide diffusion in the considered industries, it should not be regarded as a panacea. In industries such as manufacturing of autoparts, despite the notable product diversification observed in the automobile market, its circumstances have still allowed the firms to rely on capital-intensive process, and this has sustained the development of advanced manufacturing technologies that enable the agile implementation and re-configuration of highly automated assembly lines.

    Improving detection probabilities for pests in stored grain

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    BACKGROUND: The presence of insects in stored grains is a significant problem for grain farmers, bulk grain handlers and distributors worldwide. Inspections of bulk grain commodities is essential to detect pests and therefore to reduce the risk of their presence in exported goods. It has been well documented that insect pests cluster in response to factors such as microclimatic conditions within bulk grain. Statistical sampling methodologies for grains, however, have typically considered pests and pathogens to be homogeneously distributed throughout grain commodities. In this paper we demonstrate a sampling methodology that accounts for the heterogeneous distribution of insects in bulk grains. RESULTS: We show that failure to account for the heterogeneous distribution of pests may lead to overestimates of the capacity for a sampling program to detect insects in bulk grains. Our results indicate the importance of the proportion of grain that is infested in addition to the density of pests within the infested grain. We also demonstrate that the probability of detecting pests in bulk grains increases as the number of sub-samples increases, even when the total volume or mass of grain sampled remains constant. CONCLUSION: This study demonstrates the importance of considering an appropriate biological model when developing sampling methodologies for insect pests. Accounting for a heterogeneous distribution of pests leads to a considerable improvement in the detection of pests over traditional sampling models

    Factors affecting the decision making of out-sourcing in textile in Pakistan

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    This research provided the study of importance of factors affecting the decision making of out-sourcing & supplier performance in Textiles domain. The textile market of USA is the scope of this research. The basis of this study allowed comprehending the importance / weight of factors of out-sourcing (including Delivery, Flexibility, Cost, Quality & Reliability) varied according to the buyers needs. Buyer’s needs some factors were high weight / importance for one buyer and at the same time the same factors were low weight / for another buyer. It delineated the root to supply chain managers and experts for textiles industry for taking the right strategic decision for out-sourcing in today’s competitive market.Decision Making of Out-Sourcing, Out-Sourcing, Supply Chain Management.

    Functional Structure and Approximation in Econometrics (book front matter)

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    This is the front matter from the book, William A. Barnett and Jane Binner (eds.), Functional Structure and Approximation in Econometrics, published in 2004 by Elsevier in its Contributions to Economic Analysis monograph series. The front matter includes the Table of Contents, Volume Introduction, and Section Introductions by Barnett and Binner and the Preface by W. Erwin Diewert. The volume contains a unified collection and discussion of W. A. Barnett's most important published papers on applied and theoretical econometric modelling.consumer demand, production, flexible functional form, functional structure, asymptotics, nonlinearity, systemwide models

    Competitiveness of Arabian gulf ports from shipping lines’ perspectives: Case of Sohar port in Oman

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    Purpose: The purpose of this article is to investigate the factors that encourage shipping lines to use port of Sohar, in Oman. Some selected factors were used to assess to what extent it affects the port choice from shipping lines companies’ perspective. These factors include infrastructure, hinterland, connectivity and port’s dues. Design/methodology/approach: for this study both quantitative and qualitative methodologies were used. Self-administered questionnaire used for collecting quantitative data while interviews were used to collect qualitative data. Secondary data was collected by reviewing academic literature and recent relevant articles and reports. Findings: Port of Sohar has a better opportunity to be the gateway of the Gulf Cooperation Council (GCC) States and all Cargo could have dropped in the port and transferred to other GCC States by road, rail and other transportation modes. This opportunity is gained by the strategic location of Sohar Port outside of the Strait of Hormuz. It can be concluded that port competitiveness can be improved through strategic location, improved hinterland conditions, port facilities, services cost, volume of cargo, connectivity to other ports and dwell time factor. Research limitations: The research was limited mainly by conducting it only at the port of Sohar because surrounding ports are too far away and it should involve more ports to gain comparative results. Limited number of stakeholders as Port Authority, Oman International Container Terminal (OICT) and shipping lines companies and agents is another limitation. Practical implications: The port can improve its competitive advantages and focus on the investigated factors. The government can also continue in working in the three big infrastructural projects; the new express roads, Sohar Airport and rail network connections with other GCC networks. Originality/value: the study used specific factors that expected to contribute to the shipping lines companies’ selection of ports in the gulf region. This could help the port to identify their competitive advantage and how they can use these competencies to improve their competitiveness in relation to other ports in the region.Peer Reviewe

    Introduction

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    This book investigates restructuring in the electronics industry and in particular the impact of a \u2018Chinese\u2019 labour regime on work and employ - ment practices in electronics assembly in Europe.1 Electronics is an extremely dynamic sector, characterized by an ever-changing organi - zational structure, as well as cut-throat competition, particularly in manufacturing. Located primarily in East Asia, electronics assembly has become notorious for poor working conditions, low unionisation and authoritarian labour relations. However, hostile labour relations and topdown HR policies are not unique to East Asia. They have become associated with the way the sector is governed more broadly, with a number of Western companies also coming to rely on such practices
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