Search results

Support structures used in laser powder bed fusion are often difficult to clean from unsintered powder at the end of the process. This issue can be significantly reduced through a proper design of these auxiliary structures. This paper aims to investigate preliminary the airflow within differently oriented support structures and to provide design guidelines to enhance their cleanability, especially the depowdering of them.

This study investigates the cleanability of support structures in powder bed fusion technology. Digital models of cleaning operations were designed through computer-aided engineering systems. Simulations of the airflow running into the powder entrapped within the thin walls of auxiliary supports were implemented by computational fluid dynamics. This approach was applied to a set of randomly generated geometrical configurations to determine the air turbulence intensity depending on their design.

The results, which are based on the assumption that a relationship exists between turbulence and powder removal effectiveness, demonstrated that the maximum cleanability is obtainable through specific relative rotations between consecutive support structures. Furthermore, it was possible to highlight the considerable influence of the auxiliary structures next to the fluid inlet. These relevant findings establish optimal design rules for the cleanability of parts manufactured by powder bed fusion processes.

This study presents a preliminary investigation into the cleanability of support structures in laser powder bed fusion, which has not been addressed by previous literature. The results allow for a better understanding of the fluid dynamics during cleaning operations. New guidelines to enhance the cleanability of support structures are provided based on the results of simulations.

Just now we are having an interesting discussion among the Boards of Study (on Economics, Psychology, Philosophy, Sociology, and History) of London University on the existing confusion and overlapping in their theoretical basis (arising from a claim by the sociologists for a separate degree). If Law were not so strongly professionalized in England the Law Faculty would also be concerned. I prepared a memorandum, based on the examination questions during the last five years, showing that the conception of human nature now given, or assumed, in Economic teaching is quite different from that given in Sociological teaching, and that all the other groups of study differed in that respect among themselves. The sociologists, e.g. emphasise “Imitation” and ignore Hedonism. The economists assume Hedonism and ignore Imitation. The Psychologists reject both Hedonism and Imitation. Law is either purely empirical or Benthamite. Even the distribution of concrete subject matter leaves great gaps. No one, for instance, treats of the newspaper Press, or the Churches, or advertisement. At Oxford the confusion, overlap and insufficiency is more marked. Could you not make a memorandum showing how things stand at Columbia?

Research in consumer behaviour in the pro-environmental hospitality domain is limited. Furthermore, the efficiency of interventions using pictorial elements, with positive and negative framing, to influence travellers' intentions (INTs) to book green accommodation remains scarcely investigated. The theory of planned behaviour (TPB) offers a platform for testing interventions that could impact consumer behaviour. This study aims to introduce a TPB pictorial intervention in green accommodation and to provide a robust assessment of the intervention targeted at the TPB's factors.

The data were collected from Australian travellers who were exposed to convincing messages through pictorial elements. These featured either positive or negative pro-environmental effects of hotel operations. A usable sample size of 771 respondents has been achieved. A multi-group analysis using structural equation modelling was performed to investigate the intervention effect.

The results highlighted the supremacy of positive framing to influence travellers’ INTs regarding patronage of green accommodation. A knowledge-based approach to promoting green practices might encourage travellers to book green accommodations.

This study advances theory building in environmental communication. Subsequently, hoteliers might enhance their marketing strategies to publicise their pro-environmental programs.

Based on the interactionist perspective proposed by Woodman et al. (1993), this paper conceives organizational creativity as a complex concept whose investigation requires the understanding of the process, the product, the person, and the situation. Accordingly, the purpose of this paper is to enrich the understanding of how organizational creativity can be fostered by offering a framework which combines (inter-)individual-level learning (collecting knowledge from others), information sharing (through information and communication technology (ICT) infrastructures), and contextual factors (perceived top management support).

The empirical analysis draws on a sample of 362 employees from five subsidiaries of multinational corporations. The analysis is based on multivariate regression models considering organizational creativity as dependent variable.

The paper shows that individuals’ orientation toward learning from others significantly enhances organizational creativity. However, heavy ICT use negatively moderates the relationship between knowledge collecting and organizational creativity, while top management support does not show a significant moderating effect on the association between knowledge collecting and organizational creativity.

Although based on a geographically bounded perimeter, the analysis allows some generalizations.

Based on these results, the paper contributes to the literature on organizational creativity by confirming the importance of providing a holistic view of the phenomenon, consistent with its inherent complexity. In so doing, it suggests organizations and their managers should simultaneously pay attention to individual and contextual factors when planning how to foster their firms’ creativity, as both of them are found to play a critical role in firms’ success and competitiveness.

The purpose of this study is to map the intellectual structure of sustainable finance and accounting (SFA) literature by identifying the influential aspects, main research streams and future research directions in SFA.

The results are obtained using bibliometric citation analysis and content analysis to conduct a bibliometric review of the intersection of sustainable finance and sustainable accounting using a sample of 795 articles published between 1991 and November 2023.

The most influential factors in the SFA literature are identified, highlighting three primary areas of research: corporate social responsibility and environmental disclosure; financial and economic performance; and regulations and standards.

SFA has experienced rapid development in recent years. The results identify the current research domain, guide potential future research directions, serve as a reference for SFA and provide inspiration to policymakers.

SFA typically encompasses sustainable corporate business practices and investments. This study contributes to broader social impacts by promoting improved corporate practices and sustainability.

This study expands on previous research on SFA. The authors identify significant aspects of the SFA literature, such as the most studied nations, leading journals, authors and trending publications. In addition, the authors provide an overview of the three major streams of the SFA literature and propose various potential future research directions, inspiring both academic research and policymaking.