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Huijgens, L.J.G. (author), Vrijdag, A. (author), Hopman, J.J. (author)
The interaction between ship propulsion machinery, propellers and the highly dynamic environment which is the sea is a complex yet highly relevant subject. During a storm, for example, waves and ship motions may cause the propeller to draw air, or ventilate, resulting in rapid changes in propeller thrust and load torque. These fluctuations...
journal article 2022
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Huijgens, L.J.G. (author)
Requirements on ships are rapidly increasing. In particular, safety and environmental impact are under increasing scrutiny. At the same time, cost and profitability remain as important as they have ever been. These increasingly stringent constraints are beginning to pose problems during the design process. For example, the energy efficiency...
doctoral thesis 2021
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Huijgens, L.J.G. (author), Vrijdag, A. (author), Hopman, J.J. (author)
Standards for environmental impact, safety and operational performance of ships are becoming increasingly strict. In order to meet these standards, the performance of new ship designs must be predicted with an increasing level of detail and confidence. As present prediction methods lack realistic, dynamic behaviour of the ship's propulsion plant...
journal article 2021
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Haakman, Mark (author), Cruz, Luis (author), Huijgens, H.K.M. (author), van Deursen, A. (author)
Tech-leading organizations are embracing the forthcoming artificial intelligence revolution. Intelligent systems are replacing and cooperating with traditional software components. Thus, the same development processes and standards in software engineering ought to be complied in artificial intelligence systems. This study aims to understand the...
journal article 2021
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Huijgens, H.K.M. (author), Rastogi, A. (author), Mulders, E.A. (author), Gousios, G. (author), van Deursen, A. (author)
In 2014, a Microsoft study investigated the sort of questions that data science applied to software engineering should answer. This resulted in 145 questions that developers considered relevant for data scientists to answer, thus providing a research agenda to the community. Fast forward to five years, no further studies investigated whether the...
conference paper 2020
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Huijgens, H.K.M. (author), Greuter, Eric (author), Brons, Jerry (author), Doorn, Evert A. van (author), Papadopoulos, Ioannis (author), Martinez, Francisco Morales (author), Aniche, Maurício (author), Visser, O.W. (author), van Deursen, A. (author)
The development of Cloud Infra-Services has shifted over the past decade in the direction of a software code development process, also known as infrastructure as code (IaC). Contemporary continuous delivery settings in industry require fast feedback. As a consequence, companies need insight in time spent, especially in the development of such...
conference paper 2019
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Kula, E. (author), Rastogi, A. (author), Huijgens, H.K.M. (author), van Deursen, A. (author), Gousios, G. (author)
The appeal of delivering new features faster has led many software projects to adopt rapid releases. However, it is not well understood what the effects of this practice are. This paper presents an exploratory case study of rapid releases at ING, a large banking company that develops software solutions in-house, to characterize rapid releases....
conference paper 2019
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Huijgens, H.K.M. (author)
Based on the large amounts spent by software companies to develop new and existing software systems, we argue that an evidence-based approach that focuses on a software portfolio as a whole should be in place to support decision-making. We developed EBSPM as an evidence-based, practical model to support software companies to actively steer at...
doctoral thesis 2018
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Huijgens, H.K.M. (author), Spadini, D. (author), Stevens, Dick (author), Visser, Niels (author), van Deursen, A. (author)
Background: During the period of one year, ING developed an approach for software analytics within an environment of a large number of software engineering teams working in a Continuous Delivery as a Service setting. Goal: Our objective is to examine what factors helped and hindered the implementation of software analytics in such an environment...
conference paper 2018
document
Huijgens, L.J.G. (author), Vrijdag, A. (author), Hopman, J.J. (author)
Regulatory demands on ship designs, such as emission and manoeuvrability requirements, are becoming increasingly stringent, raising the need for advanced methods to predict and assess dynamic propulsion plant behaviour of a new design. At present, model scale experiments and numerical simulations are not able to predict this behaviour in full...
conference paper 2018
document
Huijgens, H.K.M. (author), van Deursen, A. (author), van Solingen, D.M. (author)
Context: In this paper we present a multiple case study on the insights of software organizations into stakeholder satisfaction and (perceived) value of their software projects. Our study is based on the notion that quantifying and qualifying project size, cost, duration, defects, and estimation accuracy needs to be done in relation with...
journal article 2017
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Huijgens, H.K.M. (author), van Deursen, A. (author), Minku, Leandro L. (author), Lokan, Chris (author)
Context: The research literature on software development projects usually assumes that effort is a good proxy for cost. Practice, however, suggests that there are circumstances in which costs and effort should be distinguished. Objectives: We determine similar-ities and differences between size, effort, cost, duration, and num-ber of defects of...
conference paper 2017
document
Huijgens, L.J.G. (author)
journal article 2017
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Huijgens, H.K.M. (author), Lamping, Robert (author), Stevens, Dick (author), Rothengatter, Hartger (author), Gousios, G. (author), Romano, D. (author)
ING Bank, a large Netherlands-based internationally operating bank, implemented a fully automated continuous delivery pipeline for its software engineering activities in more than 300 teams, that perform more than 2500 deployments to production each month on more than 750 different applications. Our objective is to examine how strong metrics for...
conference paper 2017
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Huijgens, H.K.M. (author), van Deursen, A. (author), van Solingen, D.M. (author)
Context: In this paper we present an exploratory study on the insights of organizations into the perceived value of their software projects. Our study is based on the notion that quantifying and qualifying project size, cost, duration and defects needs to be done in relation with stakeholder satisfaction and perceived value. Objectives: We...
conference paper 2016
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Huijgens, H.K.M. (author), Bruntink, M (author), van Deursen, A. (author), Van Der Storm, Tijs (author), Vogelezang, Frank (author)
In this paper we explore opportunities, challenges, and obstacles that Functional Size Measurement (FSM) experts assume to be in automatically derived functional size, directly from the software project code itself. We designed a structured survey, that was answered by 336 FSM specialists. A majority of the respondents consider FSM to be an...
conference paper 2016
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Huijgens, H.K.M. (author), van Deursen, A. (author), van Solingen, D.M. (author)
In this paper, we attempt to understand what contributes to a successful process for managing legacy system evolution. We provide an analysis of a number of key performance indicators such as cost, duration, and defects. By normalizing through function points, we furthermore compare to a larger benchmark. To do so we performed a mixed,...
conference paper 2016
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Huijgens, H.K.M. (author), Gousios, G. (author), van Deursen, A. (author)
A medium-sized west-European telecom company experienced a worsening trend in performance, indicating that the organization did not learn from history, in combination with much time and energy spent on preparation and review of project proposals. In order to create more transparency in the supplier proposal pro-cess a pilot was started on...
conference paper 2015
document
Huijgens, H. (author), Gousios, G. (author), Van Deursen, A. (author)
A medium-sized west-European telecom company experienced a worsening trend in performance, indicating that the organization did not learn from history, in combination with much time and energy spent on preparation and review of project proposals. In order to create more transparency in the supplier proposal process a pilot was started on...
report 2014
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Huijgens, H.K.M. (author), van Solingen, D.M. (author), van Deursen, A. (author)
What can we learn from historic data that is collected in three software companies that on a daily basis had to cope with highly complex project portfolios? In this paper we analyze a large dataset, containing 352 finalized software engineering projects, with the goal to discover what factors affect software project performance, and what...
conference paper 2014
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