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ONE responsibility of MBB Transport Aircraft Group is the development of high‐lift aids for the Airbus wings. An Airbus A 310–300, used in the role of a flying wind tunnel model, has yielded vital information on aerodynamics.

Inclusion of members of the target population in research is an increasing priority in the social sciences; however, relatively few studies employ approaches that involve persons with lived experience of the mental health system in mental health services research, particularly in the USA. The purpose of this paper is to describe one such approach, the employment of peer interviewers in the evaluation of a peer respite program.

The paper describes how peer interviewers were recruited, hired, trained, and supervised. The authors discuss some benefits and challenges associated with the approach.

Peer interviewer benefits and challenges: the shared lived experience between the peer interviewers and study participants contributed to increased comfort and a high response rate overall. The study opened up professional opportunities for peers, but inconsistent work hours were a challenge and resulted in turnover and difficulty filling vacant positions. The lead evaluator and supervisors worked closely with peer interviewers to ensure conflict of interest was mitigated to reduce bias.

This paper adds to the limited literature describing peer representation in research, outlining one avenue for partnering with peers to align research with the values of the intervention under study without compromising – and perhaps increasing – scientific rigor. The authors expect that even more peer involvement in the oversight, analysis, and interpretation of results would have improved the overall quality of the evaluation. Future efforts should build upon and incorporate the approach alongside more comprehensive efforts to partner with service users.

Rolling bearing operation under mixed and boundary lubrication conditions may lead to heavy adhesive or abrasive wear, which may lead to wear-induced rolling bearing failure. The purpose of this paper is to investigate the wear protection capabilities of different grease compositions at varying temperatures. It is considered that the temperature influences the lubrication conditions, the behaviour of grease components, namely, bleed oil and thickener, as well as the tribofilm formation due to tribo-chemical interactions between additives and surfaces.

In this study, four different greases were produced on the basis of a mineral base oil by varying the thickener and the addition of ZDDP. Various grease-lubricated rolling bearing experiments were conducted in a wide temperature range from 0°C to 120°C. Subsequently, the wear pattern, tribofilm formation and grease structures were analysed. Thereby, the influence of the different grease thickeners and the performance of ZDDP as a common antiwear and extreme pressure additive was evaluated.

The results show a strong temperature-dependency and allow a classification of temperature ranges concerning wear protection. At low temperatures, all greases provide a very good wear protection without the evidence of additive-based tribofilm formation. In the experiments at elevated temperatures, ZDDP tribofilms were formed. The formation depends on the thickener type: in comparison to lithium thickener, polyurea thickener favours more protective tribofilms at the same temperature. The experimental results show that medium temperatures in the range of 40°C–60°C are critical concerning wear due to the insufficient tribolayer formation and limited load carrying capacity of the grease.

Temperature is a key operating parameter for grease lubrication in roller bearings. The experimental work enables consideration of different impact pathways of temperature by combining roller bearing tests and microanalysis.

In the periods, following the First and Second World Wars, colonial states across the British empire underwent waves of reforms that were geared toward improving human well-being, from enhancing social conditions, such as health and education, to expanding opportunities for economic and political engagement. The literature on the colonial state typically traces these state-building efforts to the agency of European colonial officials. However, evidence from a historical analysis of Trinidad and Tobago reveals a different agent driving state reform: the colonized. A local labor movement during colonialism forced the colonial state to construct a number of state agencies to ameliorate the economic, political, and social conditions in the colony, thereby resulting in an increase in state capacity. This study, therefore, provides critical intervention into the colonial state literature by showing that the agency of the colonized, as opposed to just the colonizers, is key to state-building, and specifying the mechanisms by which the subaltern constrained colonial officials and forced them to enact policies that improved colonial state capacity.

I would like to be able to report that the film Salmer fra kjokkenet (Kitchen Stories) (dir. Bente Hamer, 2003) was a direct consequence of the powerful arguments I made for the use of ethnography in housing studies almost 20 years ago (Franklin, 1990). Sadly, I cannot! In this touching comedy drama from Norway, a team of Swedish ethnographers working from the Swedish Home Research Institute descend on a remote rural locality in Norway during the 1950s in order to study the kitchen habits and cultures of single living men. It is an improbable quest, until one learns that the same team discovered how Swedish housewives needlessly walk the equivalent distance between Stockholm and the Congo every year as they go about their routine kitchen business; a finding that successfully paved the way for more efficient kitchen design and culture. So it was that the team descended on the very perplexed and uncooperative Norwegian bachelors (the last sub-group in their programme) in order to map out their domestic inefficiencies. Comic tension is built both through their ethnographic props (the researchers were to sit on giant stools in the kitchens, giving them panoptic vision), rules (they were not to talk to respondents, although that proves awkward when lights are turned out by thrifty Norwegians) and living spaces (they were to live in specially designed, round caravans parked outside their respondent's homes). The film would have been a vindication of my arguments not so much because it demonstrates the truth that practical housing outcomes can arise from spending sufficient periods of time studying cultural milleux, but because it also demonstrates that the relationship between researchers and respondents become more productive over time, resulting in more reliable data, better understandings of that millieux and what their problems (and therefore often ‘ours’) actually consist of.

The purpose of this paper is to exploit a database of pre-existing designs to accelerate parametric optimization of antenna structures is investigated.

The usefulness of pre-existing designs for rapid design of antennas is investigated. The proposed approach exploits the database existing antenna base designs to determine a good starting point for structure optimization and its response sensitivities. The considered method is suitable for handling computationally expensive models, which are evaluated using full-wave electromagnetic (EM) simulations. Numerical case studies are provided demonstrating the feasibility of the framework for the design of real-world structures.

The use of pre-existing designs enables rapid identification of a good starting point for antenna optimization and speeds-up estimation of the structure response sensitivities. The base designs can be arranged into subsets (simplexes) in the objective space and used to represent the target vector, i.e. the starting point for structure design. The base closest base point w.r.t. the initial design can be used to initialize Jacobian for local optimization. Moreover, local optimization costs can be reduced through the use of Broyden formula for Jacobian updates in consecutive iterations.

The study investigates the possibility of reusing pre-existing designs for the acceleration of antenna optimization. The proposed technique enables the identification of a good starting point and reduces the number of expensive EM simulations required to obtain the final design.

The proposed design framework proved to be useful for the identification of good initial design and rapid optimization of modern antennas. Identification of the starting point for the design of such structures is extremely challenging when using conventional methods involving parametric studies or repetitive local optimizations. The presented methodology proved to be a useful design and geometry scaling tool when previously obtained designs are available for the same antenna structure.

The incorporation of fundamental social rights in the new Netherlands constitution was dismissed as “a cosmetic operation” in the nineteen‐seventies. This is an interesting comment for two reasons.