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The problems to be encountered in the utilization of manned space vehicles for surveillance and reconnaissance are reviewed, together with the variables which will influence the performance of the human operator in such operations. Analyses of the theoretical capabilities of direct, unaided vision and man-periscopic vision are presented. These analyses indicate that the tasks assigned to the human operator must be examined carefully in order to ascertain that they are within his capabilities. However, the operator may be materially assisted through proper design and selection of the display-sensor system, which may overcome his inherent deficiencies. The complexity of the variables involved and the lack of much pertinent data indicates that the utilization of the human operator in any specific, system must be determined as a result of trade-offs performed during actual system development and in keeping with the specific mission objectives to be met by that system.

World-systems analysis, although itself a macrohistorical perspective, eminently allows for writing individual biographies because these are structurally conditioned and historically contingent trajectories developing in specific time and space. The biographical genre seems particularly useful in intellectual popularization and in exploring how macro-level concepts behave in observed empirical situations. This article offers and demonstrates specific recommendations and methodological warnings in application to the personal trajectory of Immanuel Wallerstein, the founder of world-systems analysis as an intellectual movement.

Composite materials, specifically carbon fiber reinforced plastics (CFRPs), are used in various applications such as the automotive, aerospace, and renewable energy industries, thus increasing their global production and volume consumption and creating a subsequent increase in CFRP waste. Especially in space applications and Vega launcher construction, the use of CFRP components to replace metal envisages significant benefits in the use phase by reducing weight and fuel consumption requirements. The current and future waste management and environmental legislation, considering the actual and impending EU framework on waste management, requires all engineering materials to be properly recovered and recycled from EoL products. In this study, the potential of recycling and the subsequent environmental benefits have been assessed by investigating the EoL of CFRPs through a life cycle assessment (LCA). LCA is a valuable tool for evaluating a composite material's environmental ecological burdens over its lifetime. Therefore, it is important to the composites industry as a material selection tool when determining the applicability of recycled composites in the design phase. Particularly, the benefits from recycling methods were systematically studied in order to assess the environmental impacts of EoL scenarios, to underline the importance and necessity for the maturity increase in recycling technologies for CFRPs.