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This paper aims to provide a comprehensive review of uncertainty quantification methods supported by evidence-based comparison studies. Uncertainties are widely encountered in engineering practice, arising from such diverse sources as heterogeneity of materials, variability in measurement, lack of data and ambiguity in knowledge. Academia and industries have long been researching for uncertainty quantification (UQ) methods to quantitatively account for the effects of various input uncertainties on the system response. Despite the rich literature of relevant research, UQ is not an easy subject for novice researchers/practitioners, where many different methods and techniques coexist with inconsistent input/output requirements and analysis schemes.

This confusing status significantly hampers the research progress and practical application of UQ methods in engineering. In the context of engineering analysis, the research efforts of UQ are most focused in two largely separate research fields: structural reliability analysis (SRA) and stochastic finite element method (SFEM). This paper provides a state-of-the-art review of SRA and SFEM, covering both technology and application aspects. Moreover, unlike standard survey papers that focus primarily on description and explanation, a thorough and rigorous comparative study is performed to test all UQ methods reviewed in the paper on a common set of reprehensive examples.

Over 20 uncertainty quantification methods in the fields of structural reliability analysis and stochastic finite element methods are reviewed and rigorously tested on carefully designed numerical examples. They include FORM/SORM, importance sampling, subset simulation, response surface method, surrogate methods, polynomial chaos expansion, perturbation method, stochastic collocation method, etc. The review and comparison tests comment and conclude not only on accuracy and efficiency of each method but also their applicability in different types of uncertainty propagation problems.

The research fields of structural reliability analysis and stochastic finite element methods have largely been developed separately, although both tackle uncertainty quantification in engineering problems. For the first time, all major uncertainty quantification methods in both fields are reviewed and rigorously tested on a common set of examples. Critical opinions and concluding remarks are drawn from the rigorous comparative study, providing objective evidence-based information for further research and practical applications.

New technologies represent an important challenge for all sectors across the world, becoming a relevant opportunity for the luxury hospitality industry as well. This study empirically investigates the effects of openness to change and status consumption orientation in influencing luxury hotel guests' perceived usefulness of voice assistants when integrated with their staying. Specifically, we shed light on the potential interplay between these two constructs in shaping guests' perceived usefulness of these devices. Finding suggests that openness to changes and status consumption represents two potentially alternative aspects that managers could leverage to encourage hotel guests' perceived usefulness and vocal assistant devices. This implies that openness to change on the part of luxury hotel guests may be a necessary but not sufficient condition for these devices to be accepted. Rather, luxury hotel managers should also consider the status consumption orientation of their guests.

In recent years, there have been many concerns about issues surrounding building maintenance, which are continually increasing. However, there is a lack of comprehensive studies on building maintenance issues, their effects and the way forward. Therefore, the purpose of this paper is to carry out a comprehensive review of building maintenance issues, their effects and the way forward. It also aims to develop a conceptual model that can support future research.

A systematic review of the literature published from 2009 to 2019 was carried out. Five relevant databases were searched, based on this study's search terms, and a narrative synthesis of the results from the included studies was carried out. Studies were eligible for inclusion if they fulfilled the inclusion criteria of this systematic review.

This study has identified and classified building maintenance issues, their effects and the way forward, and also developed a conceptual model that demonstrates the association between issues, their effects and the way forward. The way forward of the conceptual model focuses on effective management, technical capability, development of human resources and cost optimisation.

This paper addresses an important topic: the aspect in which it differs from existing studies is that, in the latter, the researchers studied a single sub-issue, whereas this systematic review includes a comprehensive study of building maintenance issues. Furthermore, this review has demonstrated how the way forward can moderate issues and their effects.

This study examined the differential effects of printed advertisements with luxury and nonluxury brands on consumer brand attitude persuasion using a qualitative experimental approach.

The authors adopted a qualitative experimental approach and the authors conducted two experiments over six months. In the first experiment, participants were asked to view five print advertisements related to five different luxury brands. In the second experiment, the same participants were asked to view another five print advertisements on non-luxury brands. The qualitative thematic differences for each brand were analyzed using NVivo software, employing the theoretical assumptions of Petty and Cacioppo's (1981) elaboration likelihood model (ELM).

In experiments 1 and 2, it was identified that brand experience, personalized brand experience, product quality, product quantity, personal image-conscious, nonpersonal image-conscious, affordability and unaffordability as the main thematic findings leading to consumer attitude persuasion.

The two main contributions are as follows: theoretically, applying a social psychology theory to the advertising industry offers an understanding of the social cognition stages of a human mindset. As a practical implication, this study's findings guide advertising agencies, marketers and salespeople regarding how to design effective print advertisements in a way that persuades consumer attitudes.

Through the theoretical assumptions of Petty and Cacioppo's (1981) ELM, this paper can be considered one of the first studies to combine social psychology and advertising to investigate the differential effects on consumer brand attitude persuasion for luxury and nonluxury brands.

If you are a religious reader of this column, then you know that I do not write all the articles. No, that would be just too boring. So to add “spice” to the column I often entertain the works of guest columnists. Actually, the reason for including guest columnists has less to do with “spice” than it does with general interest. When I receive articles from column readers, it gives me insight into their professional experiences, and in turn I share what I have learned with you.

This paper examines results of a survey concerning online users' attitudes and perceptions of the ease of use and other factors of Lockheed's DIALOG and SDC's ORBIT command or query languages. Analysis of the results shows that, along with such factors as the number of files and system first learned, perceived ease of use of a command language is an important consideration in user preference for a given system, and therefore is one of the important reasons why most users prefer DIALOG.