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People who are interested in evaluating and rating microcomputer technology need a single, composite measure which is rich enough to enable comparing machines of widely differing time periods, features and formats. Traditionally, computers are modeled by describing four primary features ‐ their CPU, available memory, and input/output (I/O) capabilities. Applying this general model to portable microcomputers, this paper uses a scoring model methodology to develop a composite measure for the portable microcomputer marketplace and then evaluates the model’s longitudinal performance. The technological scoring model methodology is a very pragmatic and highly subjective technique to derive a relative measure for identifying long‐term technological trends and rating/ranking individual machines one with another. Furthermore, employing the scoring model offers some unique challenges to the technological forecaster. However, the scoring model does seem to be a useful approach (at least for portable microcomputer technology) if used with due caution.

Aim of the present monograph is the economic analysis of the role of MNEs regarding globalisation and digital economy and in parallel there is a reference and examination of some legal aspects concerning MNEs, cyberspace and e‐commerce as the means of expression of the digital economy. The whole effort of the author is focused on the examination of various aspects of MNEs and their impact upon globalisation and vice versa and how and if we are moving towards a global digital economy.

This chapter aims to make sense of the growing research that examines the role of culture in mergers and acquisitions. We provide a detailed review of the many related but distinct constructs that have been introduced to the literature. While each construct has contributed to our understanding of the role of culture, the lack of connections made among constructs has limited the consolidation of contributions. The review shows what these constructs mean for mergers and acquisitions, what major findings have been discovered, and, most importantly, how constructs interrelate. Our discussion provides several opportunities to foster the needed consolidation of this research.

A main cause of defects within material extrusion (MatEx) additive manufacturing is the nonisothermal condition in the hot end, which causes inconsistent extrusion and polymer welding. This paper aims to validate a custom hot end design intended to heat the thermoplastic to form a melt prior to the nozzle and to reduce variability in melt temperature. A full 3D temperature verification methodology for hot ends is also presented.

Infrared (IR) thermography of steady-state extrusion for varying volumetric flow rates, hot end temperature setpoints and nozzle orifice diameters provides data for model validation. A finite-element model is used to predict the temperature of the extrudate. Model tuning demonstrates the effects of different model assumptions on the simulated melt temperature.

The experimental results show that the measured temperature and variance are functions of volumetric flow rate, temperature setpoint and the nozzle orifice diameter. Convection to the surrounding air is a primary heat transfer mechanism. The custom hot end brings the melt to its setpoint temperature prior to entering the nozzle.

This work provides a full set of steady-state IR thermography data for various parameter settings. It also provides insight into the performance of a custom hot end designed to improve the robustness of melting in MatEx. Finally, it proposes a strategy for modeling such systems that incorporates the metal components and the air around the system.