Improving efficiency: time-critical interfacing of project tasks

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Abstract

The paper discusses the management of time-critical operations and their dynamic interrelations in project environments. It is well known in theoretical literature that delayed operative tasks generate a cumulative effect, which delays the overall delivery time making efficient time management difficult. However, practising managers seem to be helpless with this phenomenon if judged by the often reported poor performance of project management. To control the use of time, managers tend to plan safety buffers in their operations, which bias the overall planning of projects. The result of all this is uncontrolled and unknown outcome of the whole operation and, even worse, it inherently makes development efforts very difficult to implement, as the true performance of the organization is hidden in the realization of airy plans. Based on case studies in various industrial environments, we propose that project schedules need to be managed by putting special emphasis on the time-use within individual tasks and by ensuring that work proceeds smoothly along the critical chain of tasks. To enable this, high transparency is needed on how time is used in project organizations.

Section snippets

Preamble

A study by the Standish Group scanned more than 8000 projects and compared their anticipated results with the real outcome. According to this study, only 16% of the projects were able to meet the goals set in terms of time, budget and quality [1]. Further on, the project management literature (e.g. [2]) clearly points out that success in project management is often judged according to subjective perceptions:

  • 1.

    The Fulmar Oil Field in the North Sea was late, but extremely profitable for the owner,

Research method and data

During 1980s and 1990s time was promoted as the prime performance criterion to assess productivity in manufacturing operations [5]. The time-based management literature [6], [7], [8], [9], [10], [11], [12] has highlighted the importance of timely and well-concerted operations to achieve faster throughput times resulting in rapid and accurate deliveries. [13] describes how time has become one of the most important sources of competitive advantage in manufacturing industries. He describes the

A reference case from supply chain management in the manufacturing environment

The case paper mill is situated in Scandinavia with main markets in central Europe. Managing the operations was difficult because of biased demand information and the buffering of goods in inventories in each echelon of the supply chain to secure good customer service. Because of the uncertainty and long production cycles the delivery times were lengthy and production batch sizes large. The company initiated a radical change process, the product palette was revised and low-volume products were

Cross-case analysis and the lessons learned

In a sequence of suppliers, retailers and sales offices, each link embeds a certain amount of instability in the operation of the whole chain. When transmitted along the chain, minor distortion creates biased demand information. This in turn creates the so-called flywheel effect [24], [25]. In short, this means that demand distortion causes problems with the production capacity, which implies delivery shortages. This triggers over-ordering, causing some demand amplification, but also indicates

Conclusions and suggestions for further research

The main message of this article is to emphasize the importance of ensuring work to proceed efficiently in the individual tasks and to make tasks interface with related tasks fluently. The obtained results for better time-based performance in project management, sharpen our understanding of the applicability of time-based management in the project business environment. These cases were complemented with one non-project industry case, which showed that an analogy between operations management in

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