Search results

The density method is one of the powerful topology optimization methods of magnetic devices. The density method has the advantage that it has a high degree of freedom of shape expression which results in a high-performance design. On the other hand, it has also the drawback that unsuitable shapes for actually manufacturing are likely to be generated, e.g. checkerboards or grayscale. The purpose of this paper is to develop a method that enables topology optimization suitable for fabrication while taking advantage of the density method.

This study proposes a novel topology optimization method that combines convolutional neural network (CNN) as an effective smoothing filter with the density method and apply the method to the shield design with magnetic nonlinearity.

This study demonstrated some numerical examples verifying that the proposed method enables to efficiently obtain a smooth and easy-to-manufacture shield shape with high shielding ability. A network architecture suitable as smoothing filter was also exemplified.

In the field of magnetic field analysis, very few studies have verified the usefulness of smoothing by using CNN in the topology optimization of magnetic devices. This paper develops a novel topology optimization method that skillfully combines CNN with the nonlinear magnetic field analysis and also clarifies a suitable network architecture that makes it possible to obtain a target device shape that is easy to manufacture while minimizing the objective function value.

Intrapreneurship (IP) and Strategic Human Resource Management (SHRM) are a paradigm in which the current global scenario of increased homeoffice and professional globalization can have the capacity to stimulate professionals’ autonomy and new business orientations able to re-invent new strategies, services, technologies and even leadership development. This study, of an exploratory nature, aims to analyze the synchronicities between IP and SHRM, raised by relational dynamics translated into leadership, organizational culture and individual practices having as a facilitating factor technology as an agent of change for continuous improvement (based on the Kaizen philosophy). It is supported by a qualitative analysis through a case study of a leading Portuguese group, Grupo Salvador Caetano, which has been in existence for 75 years.

The results demonstrate that dynamic relations are the synchronicities of IP and SHRM as long as stimulated and transmitted to collaborators, and that technology, facilitated these processes. The flexibility of SHRM, the sequence of delegation and implementation of relational dynamics must be the key for the synchronicities of SHRM and IP to be two phenomena that go side by side and contribute to more effective performance and evolution among collaborators, as they support each other in creating firms’ value for customers. Some contributions to theory and practice, raised through a logic of “in-house entrepreneurship,” are also presented at the end of the study.