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The purpose of this paper is to propose a stable high-order absorbing boundary condition (ABC) based on new continued fraction for scalar wave propagation in 2D and 3D unbounded layers.

The ABC is obtained based on continued fraction (CF) expansion of the frequency-domain dynamic stiffness coefficient (DtN kernel) on the artificial boundary of a truncated infinite domain. The CF which has been used to the thin layer method in [69] will be applied to the DtN method to develop a time-domain high-order ABC for the transient scalar wave propagation in 2D. Furthermore, a new stable composite-CF is proposed in this study for 3D unbounded layers by nesting the above CF for 2D layer and another CF.

The ABS has been transformed from frequency to time domain by using the auxiliary variable technique. The high-order time-domain ABC can couple seamlessly with the finite element method. The instability of the ABC-FEM coupled system is discussed and cured.

This manuscript establishes a stable high-order time-domain ABC for the scalar wave equation in 2D and 3D unbounded layers, which is based on the new continued fraction. The high-order time-domain ABC can couple seamlessly with the finite element method. The instability of the coupled system is discussed and cured.

The purpose of this paper is to investigate if differences exist between the four wine-consuming generations in wine purchasing behavior, the desirability of wine attributes when making a purchase decision and information sources used. It examines if generational market segmentation is an actionable and valuable strategy for the wine industry. Generation Z, Millennials, Generation X and Baby-Boomers are the four generations examined. This research also investigates if the generations behaved differently concerning wine consumption during the COVID-19 pandemic. Further, expectations concerning future wine purchasing behavior are examined.

An online survey was conducted between April 29, 2020 and May 7, 2020, with a sample size of 944 consumers from Western US States (California, Washington, Idaho, Oregon and Nevada). One-way analysis of variance technique and Chi-square tests were used to examine differences.

Segmentation by generation is appropriate when creating products, pricing, determining channels of distribution and creating messaging for a specific wine brand. The COVID-19 pandemic caused channel shifting that is expected to continue after the pandemic.

This is the second academic paper that examines differences in wine purchasing behavior between generations including Generation Z and the only study that examines the purchasing behavior changes and expectations for the future by generation concerning the COVID-19 pandemic.

A national survey should be conducted to confirm that the results from the sample that was mostly from California and neighboring states reflect the national wine consumer in the USA.

The research identifies the products, prices, channels of distribution and messaging that are appropriate to target each generation.

This paper compares the socio-demographic features, wine consumption preferences and habits of individuals of Generations X and Y. The influence of age, as a life cycle effect, on individuals' consumption preferences from the same generation is analysed. In addition, the generational effect and period effect on consumption by each generation are studied to ascertain changes in preferences due to specific values of their birth cohort or period.

Mixed ordered logit models are estimated to identify which traits influence the probability of consuming a certain quantity of wine for each generation. The variability of the effects of different variables on the consumption decision is analysed in depth, as a reflection of the unobserved heterogeneity present in individuals' decisions. For this purpose, data from two exhaustive surveys carried out in Tenerife (Canary Islands) over a time interval of 13 years are used.

Individuals' age and period are relevant factors in the consumption decision. There are some similarities in the behaviour of both generations, although the variability of the effects of some individual traits is greater for Generation X.

This paper contributes to a better understanding of the profile of wine consumers from different generations through a joint analysis of age effects, period and cohort, which have rarely been addressed jointly in the literature. In addition, it provides an exhaustive analysis of the heterogeneity in consumption preferences that highlights the variability of the effects found.

In this essay we argue that the current social and ethical structure in the Open Source Software (OSS) Community stem from its roots in academia. The individual developers experience a level of autonomy similar to that of a faculty member. Furthermore, we assert that the Open Source Software Community’s social structure demands benevolent leadership. We argue that it is difficult to pass off low quality open source software as high quality software and that the Open Source development model offers strong accountability. Finally, we argue that Open Source Software introduces ethical challenges for universities and the software development community.

The Dutch are not afraid of getting their hands dirty in order to get things done. Faced with increasing numbers of chaotic drug users with little hope or inclination of contacting services, Dutch treatment services have developed a controversial way of getting normally out‐of‐reach clients into care. Based on a treatment model for care in the community patients, drug and alcohol services are resorting to ‘friendly’ persuasion to get people the help they need. This is a historical perspective on ‘interferential’ care and how it can be applied to treatment in the substance misuse field.

We contend that software developers have an ethical responsibility to strive for reliable software. We base that obligation on long standing engineering traditions that place the public good as a central tenant and on the professional relationship between a software developer and the users of the software developed.

The paper deals with succession processes in tourism family enterprises. Beginning with a literature review on succession in family firms, the paper focuses on the motivation structure of successors and his/her perceived problems associated with succession in family enterprises. A survey carried out in the Italian Alps during 2003 analyses ex‐post evaluations of succession processes by successors. In a first attempt, the author establishes the importance of family business succession research in terms of the available literature. Relevant succession models to be found in the social sciences literature are discussed in order to deduce relevant research questions for the empirical study at hand. The focus of the paper is an analysis of success in family firms succession processes, based on varying motivation structures (factors) of the successor.

The purpose of this study is (1) to confirm the relationship between the two dimensions of social desirability (pretending and denying), self-reported stress and health reports in police officers and (2) to assess whether dysfunctions in basal cortisol profiles are related to social desirability.

Social desirability is known to influence how individuals respond to sensitive topics, such as questions concerning health in the workplace, and has usually been defined according to two dimensions: pretending and denying. However, it is not known whether social desirability is only a bias in responding to health surveys or a more general attitude of denying problems and pretending to be stronger than one is in the everyday life. If the latter is true, social desirability may have important health implications, and underlying mechanisms must be described. In total, 77 police officers completed questionnaires measuring social desirability (denying and pretending), perceived stress as well as mental and somatic health symptoms. They were further instructed to collect saliva samples for cortisol concentrations assays.

These preliminary results showed that denying was negatively related to the report of stress and health symptoms. Furthermore, police officers higher in pretending showed a flatter diurnal cortisol slope.

The correlation between dysregulation of the hypothalmic-pituitary-adrenal (HPA) axis, as expressed by a flatter cortisol slope, and a higher score in the pretending subscale suggests that looking for social approval by inflating one's capacities is related to chronic work-related stress, making the individual more vulnerable to stress-related disease.

To study the potential health-relevant consequences and underlying mechanisms of social desirability bias related to police culture by including stress biomarkers.

The paper attempts to answer the question as to the determinants of the typical size configuration of firms in Central Europe's hospitality industry. In discussing the historically fragmented character of hospitality and tourism and the associated conduct and performance characters of this industry, the paper presents different possible growth scenarios and/or possibilities for the hotel accommodation sector including internationalisation. In the concluding section of the paper the consequences of the twin forces ofglobalisation and heightened competition and a quickened pace of technological change are analyzed with respect to the industry's pattern of growth and development.

The emergence of marketing clubs has been made possible by database technology. Reviews the published literature in depth and categorizes clubs from suspects to regular subscribers. Analyses three new clubs launched by MCB University Press for readers and authors showing achievements to date.