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The present work is an experimental and numerical study of a sloshing problem including baffle effects. The purpose of this paper is to assess the numerical behavior of a Lagrangian technique to track free surface flows by comparison with experiments, to report experimental data for sloshing at different conditions and to evaluate the effectiveness of baffles in limiting the wave height and the wave propagation.

Finite element simulations performed with a fixed mesh technique able to describe the free surface evolution are contrasted with experimental data. The experiments consist of an acrylic tank of rectangular section designed to attach baffles of different sizes at different distance from the bottom. The tank is filled with water and mounted on a shake table able to move under controlled horizontal motion. The free surface evolution is measured with ultrasonic sensors. The numerical results computed for different sloshing conditions are compared with the experimental data.

The reported numerical results are in general in good agreement with the experiments. In particular, wave heights and frequencies response satisfactorily compared with the experimental data for the several cases analyzed during steady state forced sloshing and free sloshing. The effectiveness of the baffles increases near resonance conditions. From the set of experiments studied, the major reduction of the wave height was obtained when larger baffles were positioned closer to the water level at rest.

Model validation: evaluation of the effectiveness of non-massive immersed baffles during sloshing.

The value of the present work encompass the numerical and experimental study of the effect of immersed baffles during sloshing under different imposed conditions and the comparison of numerical results with the experimental data. Also, the results shown in the present work are a contribution to the understanding of the role in the analysis of the proposed problem of some specific aspects of the geometry and the imposed motion.

The challenges of digital transformation (DT) have gained attention from both academics and practitioners, as more manufacturing companies are seeking digital technology implementation. This study, therefore, aims to identify the challenges of DT in manufacturing companies and propose new research directions.

A systematic literature review considering 176 articles (published between 2003 and 2019) was used to build a conceptual framework of DT.

A systematized view of challenges regarding organizational commitment, value creation, value proposition, value delivery, value capture, information and technology infrastructure and data security were identified. Moreover, a conceptual framework was developed to summarize the challenges and how they are associated with the business model value architecture and with the DT phases. Research opportunities for future research were also identified, contributing to the advancement of the topic.

First, the study provides a categorization of the main challenges of DT in manufacturing companies. Second, it identifies research gaps and future research avenues; and finally, it proposes a conceptual framework that aims to support more rigorous studies and guide management decisions regarding an integrative understanding of DT.

This paper studies how the concepts of efficiency, effectiveness and efficacy are used in project management literature. The concepts relate to the degree of success or failure of projects and the degree to which the results are achieved. The purpose of this paper is to review the use of the concepts of efficiency, efficacy and effectiveness in project management literature and among practitioners.

The study is based on an extensive literature review, initially from the International Journal of Managing Projects in Business. The first phase involved searching the words “efficiency”, “effectiveness” and “efficacy” in all articles of the journal, and then quantifying the results. This was followed by a qualitative search of the same articles with the aim of understanding how the terms “project efficiency”, “project efficacy” and “project effectiveness” are used. A further intensive literature review was then conducted in other literatures in the field of project management, including, but not limited to, International Journal of Project Management and Project Management Journal. Finally, the authors complemented the review by including theories from deep searches of Google Scholar and Google Books using the parameters “project efficiency”, “project effectiveness” and “project efficacy” and checked how the three concepts are used in other fields.

This research reveals there is wide diversity in interpretations of the three concepts among research scholars and practitioners, which makes it challenging to apply these three concepts appropriately and clearly. As a consequence, the authors propose a model for describing these concepts.

This research is based on an academic and non-academic literature review. It identifies a number of inconsistencies in existing literature regarding the three concepts.

This review enriches understanding of project management. Clarifying the understanding of project efficiency, project effectiveness and project efficacy will help and support organisational improvement. A clear and aligned view of these concepts can also be a basis for measurements based on possible developed indicators.

This paper highlights the gap in the literature concerning the practical use and interpretation of the concepts “project efficiency”, “project effectiveness” and “project efficacy”.