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The European Mathematical Information Service (EMIS) is a cooperative venture between several international partners under the umbrella of the European Mathematical Society (EMS). The main purpose of EMIS is to provide access to freely available information on mathematics in the Web. As an important part of EMIS an electronic library is stored on the main server and its mirrors, collecting all freely accessible electronic journals in mathematics combined with electronic versions of printed journals. It also contains electronic proceedings, volumes and monographs. This core content is embedded in, and linked with, an environment of comprehensive facilities for accessing mathematical research papers: literature information databases, projects for one‐stop shopping sites for mathematics on the Web, freely available digital content of classical mathematical publications and access to electronic grey literature. The aim of this article is to describe this part of EMIS in some detail.

A key characteristic of powder bed fusion for polymers is that also the non-processed powder in the powder bed is exposed to elevated temperatures. This alters the properties of the remaining powder, which is compensated by refreshing the used powder with new powder. Nonetheless, it is discarded after a certain number of process iterations, which is economically and ecologically highly disadvantageous. Research works intensively to analyse and reduce the concurring effects responsible for powder ageing. This study aims to give a comprehensive overview of the cumulative changes in the powder and the printed parts when conducting several subsequent build cycles.

New polyamide powder (PA12) was used in a total of nine subsequent build cycles with constant sintering parameters and without powder refreshing. After each iteration, the powder and parts were tested for their morphological, thermal and rheological properties.

The results are related to three main changes in the powder during the build cycles: decreasing bulk density (through agglomeration), increasing melt viscosity (through polyamide post-condensation) and increasing melting peak and onset temperatures (through thermal annealing of the powder).

Even though the ageing of PA12 powder in powder bed fusion is well-known, it is not yet fully understood. Studies are not complete and due to different ageing conditions only partially comparable. The detailed study aims to help understand the related effects of powder ageing for process-relevant properties and to show which factors require control to limit the powder ageing.

This study aims to investigate the effect of the material thickness and build orientation on the mass transfer of low molecular weight substances through polyamide 12 (PA12) structures produced by laser sintering (LS).

Disc-shaped PA12 sheets having a nominal thickness ranging from 700 to 2,000 µm were built in horizontal, vertical and diagonal orientations and their permeation properties to oxygen and water vapor were measured. The structural properties of the sheets were examined by X-ray micro-computed tomography, differential scanning calorimetry and polarized light microscopy.

All the LS sheets that were investigated had water vapor and oxygen permeation coefficients that are in the range of those of PA12 produced by traditional manufacturing technologies. Despite significant differences in the porosity characteristics, the permeation properties of sheets built in different orientations were similar. The pores seem to have no measurable effect on the mass transfer rates in the sheets, and the transport processes seem to predominantly follow the rules of a regular solution-diffusion mechanism. The results showed a non-significant trend toward thickness-dependent permeation coefficients, which agrees with the observed differences in the crystal structures of the sheets.

The results are an important basis for the qualification of LS technology for direct manufacturing in applications requiring special barrier performance.

This study provides new information on mechanisms of mass transport through LS PA12 and the effect of the material thickness and build orientation. Furthermore, the results enhance understanding of the structural properties of thin polymeric sheets produced by LS.

This paper aims to analyze the effects of enabling management control systems (MCSs) and relational capabilities (interorganizational learning and coordination) on conflict management in innovation ecosystems.

Shedding light on relational governance, structural equation modeling (symmetric analysis) and qualitative comparative fuzzy-set analysis (asymmetric analysis) were applied to a sample of 164 Brazilian firms associated with science and technology parks (STPs), a specific type of innovation ecosystem.

The results of the symmetric analysis showed that enabling MCSs have a direct and positive effect on conflict management, as well indirect effects through interorganizational learning and coordination. The results of the asymmetric analysis indicated four solutions to promote high levels of conflict management, with enabling MCS solutions standing out, as they are present in the majority of cases in the sample.

Interorganizational conflict in innovation ecosystems are inevitable, but the previous literature is inconclusive about how the interrelation between MCS and relational capabilities can foster the management of these conflicts. By providing evidence on the predictors and solutions that lead to high levels of conflict management, this study presents valuable insights into how firms and STPs can mutually promote organizational and relational benefits throughout the innovation activities developed among those involved in innovation ecosystems.

This study aims to analyse the importance of intellectual capital (IC) in networks formed by start-ups, with a view to obtaining resources that individually they would be unable to acquire.

To achieve this aim, a qualitative approach was adopted, and within this, the case study method was used. The data-collecting instrument was the semi-structured interview, held with the business-people/managers of five start-ups present in an incubator (Startup Rém) based in Portugal, and with the person in charge of this incubator, together with observation and documentary analysis.

From content analysis, the results suggest that the business people recognise the presence of IC at the moment of creating their business and that this is a means to attain sustainability and, consequently, business survival. The results also show that in the absence of network formation, the relation between the incubator and the incubated firms can be affected and limited, interfering directly with firms’ use of IC.

This research aimed to highlight the importance of IC as an essential resource for business survival and sustainability and to encourage start-ups to regard networks as a way to share and convey knowledge. This study also intends to help firms understand the role of cooperation and mutual assistance in seeking sustainability and economic growth.

This study is innovative because it has filled the gaps identified in the literature, particularly the absence of studies on the importance of IC in networks formed by start-ups, and the study of the impact of IC on firms focussing on cooperation networks.