Hajnalka Vaagen

1. Norwegian University of Technology and Science, NTNU Ålesund/2. SINTEF Trondheim, Norway · 1. Maritime Technology and Operations /2. Operations research

Research Question: How to extend the Last Planner System ® to planning the entire project? Purpose: To provide one planning and control system for both project and production, and to improve project level planning. Research Method: Design science research method Findings: Project execution planning is the appropriate focus for extending the Last Pl...

The study presented in this chapter takes the quadruple helix relational perspective to develop a regional innovation cluster for fishing nets recycling and upcycling. A multi-method approach is proposed—triangulating cluster development approaches with the quadruple helix model of innovation and organisational network analysis—to explore clusterin...

Lean construction has inspired the AEC industry globally over the last decades, and this manifests within a wide array of contexts. The purpose of this paper is to provide a narrative-based qualitative analysis of the emergence and impact of Lean construction on a national level, notably in the Norwegian AEC industry. The analysis is based on the c...

The average cost and time overrun of frequent changes in ETO and construction projects is high, and with steadily increasing cost constraints, productivity increase is critical for future competitiveness. Successful lean implementations in project-based production systems have led to great reductions in waste and time to market. However, companies...

Twenty-first century infrastructure needs to respond to changing demographics, becoming climate neutral, resilient and economically affordable, while remaining a driver for development and shared prosperity. However, the infrastructure sector remains one of the least innovative and digitalised, plagued by delays, cost overruns and benefit shortfall...

Twenty-first century infrastructure needs to respond to changing demographics, becoming climate neutral, resilient and economically affordable, while remaining a driver for development and shared prosperity. However, the infrastructure sector remains one of the least innovative and digitalised, plagued by delays, cost overruns and benefit shortfall...

Most model based studies on project uncertainty investigate a single source of uncertainty, with a dominant focus on stochastic activity durations. However, another major uncertainty facing engineering projects is that of changes in design troughout the project delivery. This may come from uncertainty in the market, technology, or regulations, lead...

In concurrent engineering projects driven by short delivery times, team performance rests on the team’s capability to quickly and effectively handle different, emergent issues. We conducted an exploratory study of a large, dynamically complex project in which team members had a record of “good problem-solving abilities.” The study revealed how the...

This paper proposes an Integrated Project Delivery methodology in shipbuilding from the perspective of design function, to validate with limited design knowledge whether the project can satisfy unified project goals. This is achieved by aligning real-time information flow with the design development process. The methodology is built on a systematic...

A major driver of planning complexity in engineer-to-order (ETO) projects is design uncertainty far into the engineering and production processes. This leads to uncertainty in technical information and will typically lead to a revision of parts of the project network itself. Hence, this uncertainty is different from standard task completion uncerta...

Engineering responsiveness is prerequisite to organisational success in dynamically changing engineer-to-order projects, such as specialised vessel construction. Creating flexibility by solving the true project planning complexity is difficult due to the involved uncertainties and dynamics, and classical models lack the flexibility necessary to ade...

Project performance is contingent upon the continuous ability of key decision-makers to collaborate effectively when solving emerging complex problems. In settings of large and complex projects, the ability to make sound decisions collectively across multiple tasks and phases increases in importance. Experimental studies have pointed to the existen...

Abstract. Engineering responsiveness is prerequisite to organisational success in dynamically changing ETO projects. Creating flexibility by solving the true engineering planning problem is difficult due to the involved uncertainties and dependencies, and emerging solutions often ignore important characteristics of the real system and lack the flex...

A major driver of planning complexity in dynamically changing ETO shipbuilding is design uncertainty far into the design planning and production processes. This leads to uncertainty in task and project completion time, and complex dependencies and correlations driven by the uncertainty in multiple task parameters. The problem is difficult to be sol...

This paper proposes a multidisciplinary framework for robust planning and decision-making in dynamically changing engineering construction projects. The aim is to facilitate 'optimal' levels and 'trade-offs' between the major factors affecting decision-making throughout the project phases, to manage design changes and other disturbances, and to gen...

Order picking is the retrieval of items from warehouses to satisfy in-house orders. Recent research shows that order picking counts for more than half of the warehouse operational costs. In this study a storage assignment clustering methodology and computer implementation is developed to reduce the walking required for an order picking operation. T...

We discuss the challenges and difficulties arising when approaching and modelling the consumer-directed substitution problem in quick response supply chains. Further, we propose heuristic solutions suited for large problems with complex uncertainty and dependency patterns. Despite the single-period newsvendor model we use, our substitution process...

In agile supply chains, dependencies in demand for products (in particular correlations) as well as substitution among products, vary substantially, and, due to uncertainty in market acceptance, a substantial share of the portfolio item demands follow bimodal distributions. Typically, advanced heuristics and major simplifying assumptions on these d...

Many see timely accurate information availability as the key of successful customer-behaviour-reactive, wait-and-see planning in agile environments. Because of the extensive use of lean retailing, these quick response (QR) strategies require substantially reduced lead times across the supply chain, with the competitive advantage of enabling constan...

Consider a well-defined fashion apparel category, where the variants are distinguished by style and colour, and are subject to two equally likely states of the world: State1 when some variants become popular and others unpopular, and State2 when the reverse takes place. We analyse the optimal portfolio and variety arising from hedging against uncer...