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This article aims to analyze sustainability in tourism as the unavoidable path for the sector and the planet.

Argues that through sustainability, it will be possible to develop companies in full harmony with the already evident needs of the planet and that it is urgent that they continue to evolve, without further erosion by creating a firm and sustainable basis for the future.

Proposes that it is necessary to think about social responsibility to achieve full sustainability but that above all, each of us—individually and collectively, has a role to play. In fact, for this path of sustainability to be followed, it is necessary to create a sustainable business environment that companies, in particular the smaller ones, can adopt.

The article presents the views and main initiatives of the Association of Hotels, Restaurants and Similar Establishments of Portugal as they interconnect social responsibility and full sustainability and illustrates these with several projects and a best practice case in energy management for restaurants.

In recent years there has been a marked increase in the consumption of bottled wine in the United States. Associated with this phenomenon, there has been a substantial rise in the number of vineyards from foreign countries entering this competitive market. The study examines the factors that influence wine prices. Specifically, the article proposes that the country of origin, the perceived quality and the varietal of the wine have an effect on wine price in favour of countries with greater wine traditions. These premises were tested by means of a multiple regression model estimated using a sample drawn from the North American market. The study concluded that this market recognises differences in country of origin, quality and varietal. Specifically, these factors significantly influence wine prices, with price premiums being awarded to wines of varietal Pinot and to wines produced in France.

The purpose is to evaluate the effect of positive and negative traditional word-of-mouth (PWOM and NWOM) on price-based quality perceptions of middle-range wine (price comprised between US$4 and US$12), considering the moderator role of type of relationship between source and receiver –in terms of the strength-of-tie – and the wine expertise of the source.

A between-subjects experimental design was employed to test the hypotheses. The dependent variable, perceived quality, was analysed using analysis of variance (ANOVA) and independent samples t-tests.

(1) WOM significantly affects price-based wine quality perceptions only when the source is perceived as expert, and independently on the type of relationship between source and receiver. (2) WOM has no “additive effect” on price-based quality perceptions for all but one condition (PWOM about high-priced wine from a close and expert source). (3) WOM results more useful than price to assess quality mainly in “contradictory” situations.

The main limitation is related to the fact that is an experiment, specifically the manipulation of strength-of-tie and source expertise. Although manipulation checks show good results for the procedure, future research should try to design better ways to manipulate these variables, or different procedures to capture similar data.

Managerial efforts aimed to the encouragement of PWOM will be more efficient in markets with a high proportion of experts. Also, the marketing strategy of stimulating PWOM would be more effective for wines in the low-price category.

This study contributes to understand the impact of WOM on wine quality perceptions by examining if WOM affects priors price-based quality perceptions. In particular, we determine if price-based quality perceptions are able to be modified by PWOM and NWOM, a “competing” approach that is novel within the wine literature in which price is usually the most used cue to elaborate quality perceptions.

The current goal is to implement a description grammar that generates housing briefs based on user and site data. The ultimate goal is to customize mass housing. This paper discusses these issues. Previous research proposed a mathematical model for the automatic generation of customized designs based on description and shape grammars. This paper describes the implementation of a description grammar that codifies the Portuguese housing design guidelines, as well as the intelligence of a human designer using them inferred after experimental work. Knowledge was sequentially converted from table format into English, Mathematical notation, and then the CLIPS language. Java Experts system Shell is the rule application engine, and JAVA and XML are used for coding theinterface and information tables, respectively.It describes how to implement a description grammar and it shows the feasibility of using them for automating the generation of housing briefs that contain enough technical information for design. In a subsequent step, it permits the automatic generation of housing solutions in real time. Backtracking is limited, theinterface does not provide visual clues for improving understanding of the available options, and the brief does not record intuitive or emotional information. It can help designers identifying the specifications of their clients' houses. It can be linked to a system that automatically generates, in a given language, housing solutions that match such specifications, thereby enabling the mass customization of housing. This paper describes the first practical implementation of a description grammar found in the literature.