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  • Production rates of skyline, balloon, and helicopter yarding systems from gross time study analysis

    Creator:
    Curtis, Richard James
    Abstract:
    This paper describes the analysis of data from a three-year gross time study of skyline, balloon, and helicopter yarding systems operating in Western Oregon. Data collection activities were designed and supervised by the Pacific Northwest Forest and Range Experiment Station, U.S.D.A. Forest Service. The specific logging systems studied were running...
    Resource Type:
    Masters Thesis
    Full Text:
    variables shown statistically to influence yarding production rates for all logging systems studied were

  • A methodology for real-time scheduling of jobs with splitting on unrelated parallel machines

    Creator:
    Subur, Fenny
    Abstract:
    Unrelated parallel machines are machines that perform the same function but have different capacity or capability. Thus, the processing time of each job would be different on machines of different types. The scheduling environment considered is dynamic in both job release time and machine availability. Additionally, each job considered can...
    Resource Type:
    Masters Thesis
    Full Text:
    , taking into consideration the capital cost, 2 operation cost, and variation in production demand

  • Group-scheduling problems in electronics manufacturing

    Creator:
    Geloğullari, Cumhur Alper
    Abstract:
    This dissertation addresses the "multi-machine carryover sequence dependent group-scheduling problem with anticipatory setups," which arises in the printed circuit board (PCB) manufacturing. Typically, in PCB manufacturing different board types requiring similar components are grouped together to reduce setup times and increase throughput. The challenge is to determine the sequence of...
    Resource Type:
    Dissertation
    Full Text:
    2.2 Production Planning and Control in PCB Manufacturing .......... 17 3 PROBLEM DESCRIPTION

  • Planning and implementing a manufacturing control system in a job shop environment

    Creator:
    Maplestone, Robert N.
    Abstract:
    This thesis is intended to provide the management of small to medium sized job shop companies with a written plan to implement a formal computerized manufacturing planning and control system. The research stemmed from a case study performed at a typical job shop where growth of production activities was complicating...
    Resource Type:
    Masters Thesis
    Full Text:
    & R Industries 3.2 Production Control System Objectives 18 3.3 Possible Benefits Available from

  • Hybrid flowshop scheduling with dual resources in a supply chain

    Creator:
    Mehravaran, Yasaman
    Abstract:
    This dissertation addresses a hybrid-flow shop scheduling problem with dual resource constraints in a supply chain. Most of the traditional scheduling problems deal with machine as the only resource. However, other resources such as labor is not only required for processing jobs but are often constrained. Considering the second resource...
    Resource Type:
    Dissertation
    Full Text:
    flowshop, or flowshop with parallel machines. By definition this extended layout has series of production

  • Component to multi-track feeder assignment and board sequencing for printed circuit board assembly

    Creator:
    Li, Yu-An
    Abstract:
    This research was motivated by the use of multi-track feeders in the printed circuit board (PCB) assembly. In a low volume, high mix production environment, setup time is usually considered more important than processing time. Implementation of multi-track feeders not only increases the capacity of the surface mount machines but...
    Resource Type:
    Dissertation
    Full Text:
    board (PCB) assembly. In a low volume, high mix production environment, setup time is usually

  • A Unit Manufacturing Process Characterization Methodology and Supporting Terminology for Sustainable Manufacturing Assessment

    Creator:
    Garretson, Ian C.
    Abstract:
    Manufacturing industry drives economic activity and growth around the world, but manufacturing activities consume large amounts of material, energy, and labor resources. Therefore, the impacts of manufacturing need to be accounted for and reduced. Direct benefits of manufacturing are products and income, which, in turn, influence the lives of people...
    Resource Type:
    Masters Thesis
    Full Text:
    Ratewaste rate of waste production Ratewater_use water use rate RCH4 methane production rate RCO2

  • The development of productivity interfirm comparison procedures for the cement industry of Saudi Arabia

    Creator:
    Al-Agha, Osama K.
    Abstract:
    Productivity Interfirm Comparison (PIC) is a simple method used to improve productivity at the firm level, where a number of firms operate in the same product line so that performance information on the firms can be compiled and compared. This results in identifying potential areas for improvement or exploitation. The...
    Resource Type:
    Masters Thesis
    Full Text:
    stra- tegic decision-making in the areas of production control, inventory control, resource

  • A linear test bed for characterizing the performance of ocean wave energy converters

    Creator:
    Hogan, Peter M.
    Abstract:
    Determining the performance characteristics of various ocean wave energy converters (OWEC) has proven to be difficult due to problems replicating a baseline motion profile in the ocean or wave tank to compare these devices. The linear test bed seeks to mechanically simulate the relative linear motion between the active components...
    Resource Type:
    Masters Thesis
    Full Text:
    vertically, there is relative linear motion between the float and spar. The current control system allows

  • Implementing quick response (QR): successes and challenges

    Creator:
    Lee, Duck Weon
    Abstract:
    Quick Response is an umbrella term for strategies to cut lead times and to eliminate unnecessary production costs from a manufacturing plant to a consumer market. In particular, the textile and apparel industries need strategies to quickly respond to a changeable market in the international supply chain. As the industry...
    Resource Type:
    Masters Thesis
    Full Text:
    eliminate unnecessary production costs from a manufacturing plant to a consumer market. In particular, the