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The study intends to develop guidelines for the communication and marketing policy of Swiss tourism service providers aiming at targeting the future senior citizen market. It is of an exploratory nature, and based on interviews with current senior citizens in Switzerland and a Delphi study with 30 experts from the Swiss tourism and hospitality sector, as well as specialists from senior citizen associations and research institutes. The results show the importance of the increasing request by senior citizens for learning experience through holidays. The different marketing strategies aimed at such clientele will be increasingly profiled according to the specific motivation and preferences of this clientele.

This paper presents the results of a questionnaire-based exploratory survey among hoteliers in Switzerland, measuring their perception of the senior clientele. These hoteliers were also asked about the specific arrangements they have made in the past for the senior customers, as well as the investments they have undertaken. The main finding is that, even though the senior segment is recognised by most hoteliers as being potentially profitable, a less than flattering image of this customer category seems to have dissuaded a great number of Swiss hoteliers from concentrating a lot of effort and resources on adapting their products and services to this customer segment. This bad image (serious physical handicaps, problems in cohabitation with other clients) deserves to be corrected. Besides, the wish of senior tourists for a personalised product and service should be taken into account by Swiss hoteliers in their future investments and offers aimed at the senior guests.

Following increasing competition on the international tourism market, a great number of Swiss hotels which are generally family businesses with small structures and aging infrastructures, find themselves in a critical financial situation. Thus, many hotels having exhausted their economic potential, cannot adequately upgrade their performance. For this reason they are forced to respond to the requirements of potential investors by presenting the progress of their activities through models of cooperation with other hotel establishments and/or other actors. In view of the significance of this issue, the present article proposes to study the effect of collaboration intensity and the type of management on the performance of Swiss collaborating hotels. By adopting a global approach to performance, it appears that hotel performance is influenced by the intensity of collaboration. Regarding the effect of the type of management the results are more questionable.

Three case studies about “air transport and sustainable tourism development” were presented in the second workshop of the AIEST‐conference.

Proposes the use of genetic algorithms to assist the development of turbulence models. A variable Schmidt number model for scalar mixing in jet‐in‐crossflows was developed through theoretical analyses. A uniform micro genetic algorithm is implemented to optimize the model. This is the first known application of the genetic algorithm (GA) technique to turbulence model development. Overall, the GA technique worked exceptionally well for this problem in a cost‐effective and time‐efficient manner. A set of experimental data on a single round jet issued into a confined crossflow is selected for calibration and optimization of the model constants using the uniform micro‐genetic optimization algorithm. Three sets of experimental data of jet‐in‐crossflows are used for the validation of the new model. Numerical results show that the proposed scheme of using the genetic algorithms to develop turbulence models produces very promising results.

Applied computational ontologies (ACOs) are increasingly used in data science domains to produce semantic enhancement and interoperability among divergent data. The purpose of this paper is to propose and implement a methodology for researching the sociotechnical dimensions of data-driven ontology work, and to show how applied ontologies are communicatively constituted with ethical implications.

The underlying idea is to use a data assemblage approach for studying ACOs and the methods they use to add semantic complexity to digital data. The author uses a mixed methods approach, providing an analysis of the widely used Basic Formal Ontology (BFO) through digital methods and visualizations, and presents historical research alongside unstructured interview data with leading experts in BFO development.

The author found that ACOs are products of communal deliberation and decision making across institutions. While ACOs are beneficial for facilitating semantic data interoperability, ACOs may produce unintended effects when semantically enhancing data about social entities and relations. ACOs can have potentially negative consequences for data subjects. Further critical work is needed for understanding how ACOs are applied in contexts like the semantic web, digital platforms, and topic domains. ACOs do not merely reflect social reality through data but are active actors in the social shaping of data.

The paper presents a new approach for studying ACOs, the social impact of ACO work, and describes methods that may be used to produce further applied ontology studies.

Economic justice is possible, if one means by it commutative justice which provides for human dignity, for fair exchange and for the participation of everyone who wants to participate. It is also essential if worldwide disorder is to be avoided. But many forces militate against it and it requires an insurance system such as the one which Josiah Royce proposed to control war as well as changes in the nature and use of money. Examines problems posed by such ideas as well as changes which seem to be taking place and which may make economic justice more feasible.