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The paper aims to present the main perspectives and conclusions of a doctoral research in the history and philosophy of science conducted in France and Austria by the author on the project of “general systemology” (or “general system theory”) instigated by Ludwig von Bertalanffy.

A genealogical enquiry accounts for its scientific, philosophical and more generally cultural origins. Its genesis in Bertalanffy's works between 1926 and 1944 is explained. The process that led it to become a collective project is then discussed: the history of the Society for General Systems Research is considered, the ambivalence of its role with regard to general systemology being demonstrated. Finally, the unity of the diverse contributions to the latter's development is asserted in a framework put forward by the author in order to account for its structure and functions.

While stating a comprehensive view of its history, the paper characterizes general systemology as the project of a general science of systemic interpretation of the “real” which remains topical, although it was never fully actualized.

A new insight is thus provided on the scope and meaning of this hermeneutics: it meets the contemporary need for a better understanding of the foundations of systems research.

This chapter explores the ways in which cybernetics influenced the works of F. A. Hayek from the late 1940s onward. It shows that the concept of negative feedback, borrowed from cybernetics, was central to Hayek’s attempt to explain the principle of the emergence of human purposive behavior. Next, the chapter discusses Hayek’s later uses of cybernetic ideas in his works on the spontaneous formation of social orders. Finally, Hayek’s view on the appropriate scope of the use of cybernetics is considered.

The purpose of this paper is to target the problem of awareness of the history of cybernetics as a field with different actors inside and outside cybernetics. It provides a short overview on research and literature during the last two decades and pleads for a multiplicity of historical views.

Historical research, review of literature.

While it can be found that there was a growing historical interest in cybernetics, this cannot be claimed for the history of the American Society of Cybernetics (ASC) as an organization and a productive network. One reason seems to be the lack of archival sources. The article provides a proposal to reconstruct such an archive for the history of the ASC.

Stimulation of historical awareness for and in cybernetics.

The purpose of this paper is to review cases of artificial reefs built through additive manufacturing (AM) technologies and analyse their ecological goals, fabrication process, materials, structural design features and implementation location to determine predominant parameters, environmental impacts, advantages, and limitations.

The review analysed 16 cases of artificial reefs from both temperate and tropical regions. These were categorised based on the AM process used, the mortar material used (crucial for biological applications), the structural design features and the location of implementation. These parameters are assessed to determine how effectively the designs meet the stipulated ecological goals, how AM technologies demonstrate their potential in comparison to conventional methods and the preference locations of these implementations.

The overview revealed that the dominant artificial reef implementation occurs in the Mediterranean and Atlantic Seas, both accounting for 24%. The remaining cases were in the Australian Sea (20%), the South Asia Sea (12%), the Persian Gulf and the Pacific Ocean, both with 8%, and the Indian Sea with 4% of all the cases studied. It was concluded that fused filament fabrication, binder jetting and material extrusion represent the main AM processes used to build artificial reefs. Cementitious materials, ceramics, polymers and geopolymer formulations were used, incorporating aggregates from mineral residues, biological wastes and pozzolan materials, to reduce environmental impacts, promote the circular economy and be more beneficial for marine ecosystems. The evaluation ranking assessed how well their design and materials align with their ecological goals, demonstrating that five cases were ranked with high effectiveness, ten projects with moderate effectiveness and one case with low effectiveness.

AM represents an innovative method for marine restoration and management. It offers a rapid prototyping technique for design validation and enables the creation of highly complex shapes for habitat diversification while incorporating a diverse range of materials to benefit environmental and marine species’ habitats.