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The purpose of this paper is to determine parameters for an efficient running-in of gears and an improved method for the prediction of the tooth flank load carrying capacity.

In this contribution, a model for the calculation of the pitting life of involute spur gears is introduced, which is based on an extension of the life model according to Ioannides and Harris for rough surfaces. To achieve the most realistic thermal elastohydrodynamic lubrication simulation and stress calculation possible, measured real surfaces and elastic-plastic material properties of the area close to the surface are used. Special attention is paid to the compatibility of the fatigue life calculation for heterogeneous rough surfaces and their consistent consideration in the lifespan calculation.

A non-destructive running-in for twin-disc pairings can be performed using suitable operating parameters, which subsequently can be transferred to tooth flank tests. Using the extended life model according to Ioannides and Harris, an enhanced prediction of the tooth flank load carrying capacity is possible.

The developed extended life model includes a new numerical approach for calculating the tooth flank load carrying capacity. It has the potential to reliably support and hence to accelerate the design process of gears.

The gender-gap reversal in education could have far-reaching consequences for marriage and family lives in the United States. This study seeks to address the following question: As women increasingly marry men with less education than they have themselves, is the traditional male breadwinner model in marriage challenged?

This study takes a life course approach to examine how educational assortative mating shapes trajectories of change in female breadwinning status over the course of marriage. It uses group-based trajectory models to analyze data from the National Longitudinal Survey of Youth 1979.

The results reveal substantial movement by wives in and out of the primary breadwinner role across marital years and great heterogeneity in female breadwinning trajectories across couples. In addition, educational assortative mating plays a role in shaping female breadwinning trajectories: Compared with wives married to men whose educational levels equal or exceed their own, wives married to men with less education than themselves are more likely to have a continuously high probability of being primary earners and are also more likely to gradually or rapidly transition into primary earners if initially they are not.

This study examines couples’ breadwinning arrangements over an extended period of time and identifies qualitatively distinct patterns of change in female breadwinning that are not readily identifiable using ad hoc, ex ante classification rules. The findings suggest that future research on the economics of marriage and couple relations in families would benefit from a life course approach to conceptualizing couples’ dynamic divisions of breadwinning.

In this paper, after an elucidation of several central concepts of the topic, the author focuses on the sales channels in tourism and clarifies the role retailers play in the market. He shows that the existence of institutional travel retailers is generally based on transaction costs, and that thanks to the automation the level of dependence on transaction costs can be reduced. This thesis induces the question to what extent the retailers' performances can be automated. In answer to this question the author creates a list of criteria including the following aspects; the general and occasional suitability of retail products (e g tickets, travel packages), the availability of technical equipment and information necessary for the automation at the points of sale and in the households (buyers), the level of complexity and acceptance regarding the handling of automated travel services. The paper comes to the conclusion that the automation of travel services will probably be used mainly by business travelers, whereas private customers will more likely keep their affinity for conventional retailers.

Although coresidence with children when one becomes old is an ideal in Chinese society, the drastic socio-economic development in Taiwan has brought some fundamental changes to living arrangements of the elderly population. The purpose of this paper is to examine the relationship between family living arrangements and elderly health in Taiwan, given the secular trend of more elderly persons choosing to live with their spouse or to live independently.

The authors utilized panel data from the “1989 Survey of Health and Living Status of the Elderly in Taiwan” with follow-ups up to 2007 to examine how living arrangements of the elderly affect the risk of mortality using discrete-time hazard models. The authors stratified the analyses by the elderly’s preference to coreside with children, and examined whether the effects of living arrangement varied by age, controlling for sociodemographics, health status, health behaviors, and social relationships observed at the baseline.

The authors found that both the associations of living arrangements and coresidence preference with that mortality risk were largely weakened when controlling for other variables. Only among respondents expressing preference for coresidence were living arrangements associated with mortality risks, and these effects increased with age. For those who did not intend to live with children, the authors found no evidence suggesting living arrangements were associated with mortality risks. The dynamics of living arrangements among the elderly and elderly care policies in Taiwan are discussed for further research.

To the authors knowledge, no previous research has examined living arrangements and mortality risks with respect to coresidence preference.

This paper synthesizes existing experimental research in the area of investor perceptions and offers directions for future research. Investor-related experimental research has grown substantially, especially in the last decade, as it has made valuable contributions in establishing causal links, examining underlying process measures, and examining areas with little available data. Within this review, I examine 121 papers and identify three broad categories that affect investor perceptions: information format, investor features, and disclosure credibility. Information format describes how investors are influenced by information salience, information labeling, reporting and accounting complexity, financial statement recognition, explanatory disclosures, and proposed disclosure changes. Investor features describes investors’ use of heuristics, investor preferences, and the effect of investor experience. Disclosure credibility is influenced by external and internal assurance, management credibility, disclosure characteristics, and management incentives. Using this framework, I summarize the existing research and identify areas that would benefit from additional research.

Ancient and universal, fantasy was most likely the first mainstream literature rather than the naturalism later recognized as mainstream. Every generation of every culture tells and retells tales based on psychological archetypes, the elements of fantasy. For instance, the Celtic tale “Leir and His Daughters” has been reworked and updated by authors ranging from Shakespeare to Diana Paxson (The Serpent's Tooth, Morrow, 1991). One of the old English/Scottish ballads collected by Francis James Child in the late 19th century (Child ballad No. 37) has recently reappeared as the novel Thomas the Rhymer by Ellen Kushner (Morrow, 1991). Similarly, retellings of the Arthurian legend are legion, from Geoffrey of Monmouth to Malory to Tennyson to such modern writers as T.H. White, Mary Stewart, Marion Zimmer Bradley (The Mists of Avalon, Knopf, 1982), and Guy Gavriel Kay (The Wandering Fire and The Darkest Road, Collins, 1986).

The purpose of this paper is to elaborate on the role of a group facilitator when taking a dialogical stance. A special interest is facilitator’s processual responsiveness and its potential for supporting a dialogic approach to process facilitation.

Theoretically, the article is based on dialogue and dialectic relationship theory. Empirically, it is based on pragmatic analysis of excerpts from audio recordings of a two-day process facilitation with an organizational group called KUDIAS.

The analysis highlights the importance of processual responsiveness of the facilitator in terms of focused attention to the process as well as to the interpersonal relations between the participants in the process. Being processually responsive, the facilitator supports the process in becoming dialogic toward all participants’ perspectives and in creating a climate characterized by curiosity, wondering, exploration and recognition. However, facilitator’s processual responsiveness also requires the ability to balance the process between support and confrontation.

Processual responsiveness is developed and discussed theoretically as well as empirically.

This study aims to document the participation of intra-household decision-making activities by older adults in India.

This study has used a nationally representative sample of 21,662 older adults (aged 60 and above) from the Longitudinal Ageing Study of India data of 2017–2018. Intra-household decision-making participation is measured based on decision-making activities that includes marriage of daughter/son, buying and selling of property, giving a gift to the family, education of family member and arrangement of social/religious events. This paper used bivariate analysis and binary logistic regression model to examine the factors associated with the participation of older adults in the intra-household decision-making activities.

The result has shown that older persons’ participation declined with increased age. This study has also found a difference in the participation of intra-households decision-making activities between male and female, rural and urban older adults, poor and rich older adults. Older adults with good health status who maintain social engagement and a good lifestyle are more likely to participate in the household’s decision-making activities.

Older adults with better economic and social status are more likely to participate in intra-household decision-making activities that make their life happier than the counterpart. Therefore, emphasis should be given to those vulnerable older adults who do not have any social and economic security in the society.

There are limited studies available on intra-household decision-making participation by older adults. This paper documents the intra-household decision-making participation by older adults in India with a nationally representative large sample.

Existing algorithms for predicting suicide risk rely solely on data from electronic health records, but such models could be improved through the incorporation of publicly available socioeconomic data – such as financial, legal, life event and sociodemographic data. The purpose of this study is to understand the complex ethical and privacy implications of incorporating sociodemographic data within the health context. This paper presents results from a survey exploring what the general public’s knowledge and concerns are about such publicly available data and the appropriateness of using it in suicide risk prediction algorithms.

A survey was developed to measure public opinion about privacy concerns with using socioeconomic data across different contexts. This paper presented respondents with multiple vignettes that described scenarios situated in medical, private business and social media contexts, and asked participants to rate their level of concern over the context and what factor contributed most to their level of concern. Specific to suicide prediction, this paper presented respondents with various data attributes that could potentially be used in the context of a suicide risk algorithm and asked participants to rate how concerned they would be if each attribute was used for this purpose.

The authors found considerable concern across the various contexts represented in their vignettes, with greatest concern in vignettes that focused on the use of personal information within the medical context. Specific to the question of incorporating socioeconomic data within suicide risk prediction models, the results of this study show a clear concern from all participants in data attributes related to income, crime and court records, and assets. Data about one’s household were also particularly concerns for the respondents, suggesting that even if one might be comfortable with their own being used for risk modeling, data about other household members is more problematic.

Previous studies on the privacy concerns that arise when integrating data pertaining to various contexts of people’s lives into algorithmic and related computational models have approached these questions from individual contexts. This study differs in that it captured the variation in privacy concerns across multiple contexts. Also, this study specifically assessed the ethical concerns related to a suicide prediction model and determining people’s awareness of the publicness of select data attributes, as well as which of these data attributes generated the most concern in such a context. To the best of the authors’ knowledge, this is the first study to pursue this question.