Chloride ingress into concrete is one of the major causes leading to the degradation of reinforced concrete structures. Its modelling is an important task to plan and quantify maintenance operations of structures. Relevant material and environmental parameters for modelling could be determined from inspection data that is very limited due to timeconsuming and expensive tests. The main objective...

Standardization is a key element in the effective use of lean manufacturing methodologies and tools for achieving process sustainability. Their combination conducive to eliminating waste improving efficiency production processes guarantees company that employees most efficient do not time on unnecessary activities. These activities can be further improved by using digital solutions, accordance ...

The process industry is increasingly making use of Risk Based Inspection (RBI) techniques to develop cost and/or safety optimal inspection plans. This paper makes use of the gamma stochastic deterioration process to model the corrosion damage mechanism. This model is successfully extended to update prior knowledge over the corrosion rate with imperfect wall thickness measurements. This is very ...

In this paper, we examine a joint lot-sizing and process investment problem with random yield and backorders. We allow for inspection and develop stochastic models which provide the optimal inspection and lot-sizing policy as well as the optimal process investment for variance reduction. The process quality loss profile around the target is captured via a modification of the Reflected Normal lo...

Defects experienced during construction are costly and preventable. However, inspection programs employed today cannot adequately detect and manage defects that occur on construction sites, as they are based on measurements at specific locations and times, and are not integrated into complete electronic models. Emerging sensing technologies and project modeling capabilities motivate the develop...

Linear programming problems with alternate solutions are challenging due to the choice of multiple strategiesresulting in the same optimal value of the objective function. However, searching for these solutions is atedious task, especially when using mixed integer linear programming (MILP), as previously applied tometabolic models. Therefore, judgment on plurality of optimal m...

Face-to-face (F2F) meeting is the cornerstone of the traditional inspection process. However, F2F meetings hinder the applicability of software inspections in the context of distributed software development. We present a preliminary study where we compare six collocated versus six distributed inspections. In the former group team members physically meet and discuss in a collocated manner, while...

In this paper, the single machine replacement problem is being modeled into the frameworks of stochastic dynamic programming and control threshold policy, where some properties of the optimal values of the control thresholds are derived. Using these properties and by minimizing a cost function, the optimal values of two control thresholds for the time between productions of two successive nonco...

Social influence is ubiquitous in cultural markets, from book recommendations in Amazon, to song popularities in iTunes and the ranking of newspaper articles in the online edition of the New York Times to mention only a few. Yet social influence is often presented in a bad light, often because it supposedly increases market unpredictability. Here we study a model of trial-offer markets, in whic...

In this paper, we consider the time-optimal control of a single-input, single-output second-order system with bounded input anddescribe amethod for calculating the number of switches and the switching times to drive the system from any initial state to a target state in a particular class. A pair of affine mappings are derived that transform the original system into one where the switching curv...