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For additive manufacturing (AM) through laser-based powder bed fusion of polymers (PBF-LB/P), accurate characterization of powder flowability is vital for achieving high-quality parts. However, accurately characterizing feedstock flowability presents challenges because of a lack of consensus on which tests to perform and the diverse forces and mechanisms involved. This study aims to undertake a thorough investigation into the flowability of eight feedstock materials for PBF-LB/P at different temperatures using various techniques.

For ambient temperature assessments, established metrics such as avalanche angle and Hausner ratio, along with the approximated flow function coefficient (FFC_app), are used. The study then focuses on the influence of elevated temperatures representative of in-process conditions. FFC_app and differential scanning calorimetry (DSC) are performed and analyzed, followed by a correlation analysis as a holistic approach to identify key aspects for flowability. Furthermore, two feedstock materials are compared with a previous study to connect the present findings to PBF-LB/P processing.

The study revealed intrinsic material properties such as mechanical softening near the melting point to become significant. This partially explains why certain powders with poor ambient temperature flowability are consistently demonstrated to produce high-quality parts. FFC_app and thermal characterization through DSC are identified as critical metrics for optimizing feedstock material characteristics across temperature ranges.

Previous studies emphasized specific characterizations of feedstock material at ambient temperature, presented a limited materials selection or focused on metrics such as shape factors. In contrast, this study addresses a partially understood aspect by examining the critical role of temperature in governing feedstock material flowability. It advocates for the inclusion of temperature variables in flowability analyses to closely resemble the PBF-LB/P process, which can be applied to material design, selection and process optimization.

Hayek favored both classical hermeneutics and science. His scientific reasoning shows the logical necessity of methodological dualism. Bruce Caldwell and Viktor Vanberg oppose hermeneutics and methodological dualism in favor of science. Their arguments depend on inappropriate interpretations of the doctrine of methodological dualism and an impoverished understanding of hermeneutics that fails to distinguish classical hermeneutics from universal hermeneutics. Hayek showed that “scientific” and “humanistic” approaches to social science can and should be compatible and complementary. Opposing (classical) hermeneutics in favor of science may cause a loss of knowledge by tending to deprive “scientific” social science of insights arising from more “humanistic” traditions.

Phenomenologists are among the strongest opponents of logical positivism. Mostly associated with Edmund Husserl, phenomenology is essentially an analytical method or framework for describing and explaining social relationships and psychological orientations. Phenomenologists attempt to account for the subjective qualities which logical positivists and empiricists assume to be unreal or are mistakenly treated as objective observable phenomena. The authors note that phenomenology has been absorbed into the literature and the language of the field especially in terms of how people do and do not relate to bureaucratic organizations and government programs.

The aim of this chapter is to argue that charisma is a collective representation, and that charismatic authority is a social status that derives more from the “recognition” of the followers than from the “magnetism” of the leaders. I contend further that a close reading of Max Weber shows that he, too, saw charisma in this light.

I develop my argument by a close reading of many of the most relevant texts on the subject. This includes not only the renowned texts on this subject by Max Weber, but also many books and articles that interpret or criticize Weber’s views.

I pay exceptionally close attention to key arguments and texts, several of which have been overlooked in the past.

Writers for whom charisma is personal magnetism tend to assume that charismatic rule is natural and that the full realization of democratic norms is unlikely. Authority, in this view, emanates from rulers unbound by popular constraint. I argue that, in fact, authority draws both its mandate and its energy from the public, and that rulers depend on the loyalty of their subjects, which is never assured. So charismatic claimants are dependent on popular choice, not vice versa.

I advocate a “culturalist” interpretation of Weber, which runs counter to the dominant “personalist” account. Conventional interpreters, under the sway of theology or mass psychology, misread Weber as a romantic, for whom charisma is primal and undemocratic rule is destiny. This essay offers a counter-reading.

An extract from a book manuscript highlighting the specific challenge which Greenfield posed to established thinking. Discusses how the study of education administration has been characterized by attempts to develop a theory which describes, explains and predicts administrative behaviour within the school context. Assesses the contribution of the “theory movement” and Kuhnian concepts; the movement of research towards finding a phenomological alternative to explain administrative behaviour; and the development of interpretive approaches which look towards subjects such as the humanities for a possible solution. In the light of this background discusses in depth the contribution made by T.B. Greenfield to the debate and considers the viability of an interpretive alternative.

Phenomena are what we as researchers begin with, and to study phenomena is to appreciate how any determination of things and events always relates back to the context in which they appeared. Phenomenology is the study of such relations of appearance and the conditions of such relations. Appearance is an active rather than superficial condition, a constant bringing together of experiencing beings and experienced things (including sentient beings), in what the modern “father” of phenomenology Edmund Husserl called conditions of intentionality, and what his errant, one-time student Martin Heidegger called conditions of thrownness and projection. This chapter delves into the philosophical background of this mode of study, before opening up into consideration of, first, where phenomenology has been influential in organization studies, and, second, the potential of the approach. In so doing, we suggest much can be made of reorienting research in organization studies away from an entitative epistemology in which things are seen in increasingly causally linked, detailed isolation, and toward a relational epistemology in which what exists is understood in terms of its being experienced within everyday lives.

This paper aims to build around an abductive argument: the epistemological value of the Arts-derived knowledge is equivalent and may be supplementary to that of science, contributing to the literature on the epistemological mistrust between both systems of knowledge.

This essay proposes a conceptual model – a tool, in Kuhn’s terms – grounded on the sociology of knowledge (Berger and Luckmann, 1967; Schütz, 1951), to frame the apprehension of reality from a social perspective, and the philosophical pragmatism (Peirce, 2012), considering the fixation of beliefs as the seminal concept that leads to the legitimation of knowledge in society. The proposed conceptual model guides analysis on the epistemological value of the knowledge derived from the Arts and supports reflection on the commonalities between both finite provinces of meaning.

Reproducibility, doxastic grounding, community/membership, intersubjectivity and evidence are criteria identified as commonalities between the Arts and Science. Acceptance and legitimation across finite provinces of meaning emerge to produce minimally acceptable objectivity, made possible by the mutual validation of impressions.

The discussion on greater levels of aesthetic appreciation has been eclipsed by the authors’ intention to find specific epistemological properties of knowledge derived from the Arts.

As practitioners in applied social science, management researchers are supposed to have mastery over how to apply what they know. So, the findings suggest participation (becoming accepted, first of all) in communities of practice, learning from and contributing to distinct finite provinces of meaning. The role of organizations in the understanding of knowledge derived from the Arts and its application might be that of a protagonist, promoting creativity and innovation through openness to new perspectives on knowledge.

This essay rescues knowledge as not a justified true belief, but the result of fixed beliefs continuously and socially legitimated. This rescue escapes previous attempts that appeal to Gettier-type counterexamples. A conceptual model was proposed to frame knowledge from a philosophical and sociological perspective and represent a methodological contribution of this essay. The proposition of third-order interdisciplinarity, also represents a contribution, of conceptual nature.

This paper attempts to develop a model of the “entrepreneurial state” based on Schutz’s theory of human action. It aims to improve the understanding of the nature of state action and of entrepreneurial processes in the public sector. From the subjectivist paradigm, this paper argues that the state, like private enterprises, has purposes and public sector agents engage in conscious actions toward chosen goals which can be attended only in the future. In terms of mental constructs, the public entrepreneur’s opportunity identification activities involve four major stages. Using their imagination, they project, select, elaborate on and eventually implement the opportunity ideas. Given structural uncertainty, public sector agents will unavoidably make errors in trying to plan and implement a new project. Over time, with learning and the growth of knowledge, errors are then eliminated. The revision of plans by state agents – the source of policy change – is thus portrayed as a continuous process of learning and experimentation oriented towards the future. Since entrepreneurship implies strategic planning, and the nation needs to formulate development strategies with the aim of building competitive advantage, the last part of the paper discusses entrepreneurial intervention in association with the state’s resource base and capabilities. By referring to the Asian newly industrialised economies, this paper suggests a new approach to understanding state action and government intervention.

Past decades have witnessed significant contributions to theories of the firm, innovation and economic growth from two closely related paradigms, namely, the Capabilities School and National Innovation Systems Approach. Unlike the neoclassical models of the firm and growth, these two paradigms place emphasis on the knowledge and learning process in understanding economic development. Despite being closer to reality in their treatment of economic issues than their neoclassical school counterpart, the two paradigms have not put human agency in the forefront of their analysis. This paper constructs a theory of national capabilities in the subjectivist perspective, which is then extended to understand firm and national capabilities and competitiveness. While this paper recognizes the influence of institutions on firms' decision making, unlike contemporary evolutionary literatures, the subjectivist perspective highlights the fact that all institutions are the coordinating effort of human actions which attempt to interpret external events or make sense out of social or economic interactions.