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The problem of supplying additional power to a helicopter rotor for take‐off or hovering under overload, hot‐day or altitude conditions is discussed briefly, and the boost system requirements are defined qualitatively. The Mirquardt Aircraft Co. is in process of developing a novel ram‐jet engine to meet these requirements under the sponsorship of the United States Air Force. The progress to date is reviewed, and the eventual application of this engine is discussed.

This study creates a measure of investor sentiment directly from retail trader activity to identify misvaluation and to examine the link between sentiment and subsequent returns.

Using investor reports from a large discount brokerage that include measures of activity such as net buying, net new accounts and net new assets, this study creates a measure of retail trader sentiment using principal components. This study examines the relation between sentiment and returns through conditional mean and regression analyses.

Retail sentiment activity coincides with aggregate Google Trends search data and firms with the greatest sensitivity to retail sentiment tend to be small, young and volatile. Periods of high retail sentiment precede poor subsequent market returns. Cross-sectional results detail the strongest impact on subsequent returns within difficult to value or difficult to arbitrage firms.

This study links a rich measure of retail trader activity to subsequent market and cross-sectional returns. These results deepen our understanding of noise trader risk and aggregate investor sentiment.

In this article, we examine the ways in which older women’s experiences of imprisonment, aging, and health impact their lives. Specifically, we focus on the community reintegration experiences of older women who have served long prison sentences, exploring the lasting effects of imprisonment and aging on their physical and mental health. Two separate Canadian studies of reintegration, consisting of interviews with older reintegrating women, as well as the professionals who assist them in the community, are used to highlight older women’s reintegrations. While researchers have argued that older women should face fewer challenges during reintegration and are more likely to succeed in the community than other reintegrating populations, we find that they experience many difficulties and barriers linked to their age, health and gender.

Exports help developing countries to expand their production, promote industrialization and accelerate their economic growth. They played an important part in the economic transformation of Southeast Asian countries. The Generalized System of Preferences (GSP) is one of the ways in which developing countries can increase their exports to the markets of developed nations. The GSP, a unilateral, non‐reciprocal program agreed under the United Nations provides preferential duty entry to numerous products imported into developed countries by eligible developing countries. The objective of this study is to examine the role of GSP in stimulating exports of developing countries. It also provides a comparative appraisal of the GSP schemes of the United States and Japan. The paper also makes certain recommendations to make GSP schemes more efficient and applicable to particular situations.

This study aims to, with family structures in urban China becoming increasingly diverse, examine how and to what extent the characteristics of everyday family meals relate to the establishment and strengthening of a collective sense of the Chinese family. Integrating ritual and family identity theories developed through studies conducted in the West, the research explores the relationship between family identity and the major dimensions that characterize ritualistic practices through an examination of family dinners in a non-Western context.

The mixed-method approach combines a qualitative phase (focus groups and interviews) with a large-scale survey of households (n = 1,319) in four Chinese cities.

The results find a positive relationship between family identity and commitment to family meals, as well as continuity promoted through family meals, at a 99 per cent confidence level.

One important research limitation is that the sample was limited to four cities. In addition, it is difficult for quantitative measures to capture the richness of emotionally and symbolically laden constructs, such as communication, commitment, continuity and family identity.

The results provide insights into the meanings of family meals in China. With over one-third of household expenditures spent on food in Chinese cities, the formulation of brand positions and promotions can be informed through a greater understanding of the influence of family dynamics on food consumption.

The findings indicate that, within China’s dynamic environment of changing family values, strengthening the ritualistic characteristics of everyday family activities, such as family meals, can lead to an increase in a collective sense of family.

The study demonstrates under what conditions, within this rapidly changing socioeconomic environment, the family dinner provides stability and a sense of unity for Chinese families. In China, a trend toward individualization is accompanied by a deep-seeded sense of obligation toward family that exerts an important influence on meal composition and patterns.

The purpose of this study is to explore the association between eating patterns, social identity and the well-being of adolescents via a mixed methods study of Chinese teenagers. The specific research questions presented in this study are as follows: What is the relationship between social eating and well-being? How is the relationship between social eating and well-being mediated by social identity?

This study is based on a sequential mixed methods study, including interviews with 16 teenage–parent dyads, and a large-scale survey of over 1,000 teenagers on their eating patterns, conducted with the support of public schools. A model that tests relationships among social eating, social identity and subjective well-being is developed and tested.

The results show that dining with family members leads to improved subjective well-being for teenagers, through a partial mediator of stronger family identity. However, dining with peers is not found to influence subjective well-being.

The privileged position of family meals demonstrated through this study may be an artifact of the location of this study in one Chinese city. Further research is needed related to the connections among social identity, objective well-being and the social patterns of teenagers’ food consumption behavior.

To improve the subjective well-being of teenagers, families, public policy-makers and food marketers should support food consumption patterns that promote family meals.

While many food-related consumer studies focus on the individual, social and environmental influences of food choices of adolescents, few studies address how eating patterns affect overall well-being. These results reinforce the importance of understanding the effect of the social context of teenagers’ eating patterns on health and well-being.

This purpose of this study is to examine the fluidity of family life which continues to attract attention. This is increasingly significant for the intergenerational relationship between adult children and their elderly parents. Using practice theory, the aims are to understand the role of food in elderly families and explore how family practices are maintained when elderly transition into care.

A phenomenological research approach was used as the authors sought to build an understanding of the social interactions between family and their lifeworld.

This study extends theory on the relationship between the elderly parent and their family and explores through practice theory how families performed their love, how altered routines and long standing rituals provided structure to the elderly relatives and how care practices were negotiated as the elderly relatives transitioned from independence to dependence and towards care. A theoretical framework is introduced that provides guidance for the transition stages and the areas for negotiation.

This research has implications for food manufacturers and marketers, as the demand for healthy food for the elderly is made more widely available, healthy and easy to prepare. The limitations of the research are due to the sample located in East Yorkshire only.

This research has implications for brand managers of food manufacturers and supermarkets that need to create product lines that target this segment by producing healthy, convenience food.

It is also important for health and social care policy as the authors seek to understand the role of food, family and community and how policy can be devised to provide stability in this transitional and uncertain lifestage.

This research extends the body of literature on food and the family by focussing on the elderly cared for and their family. The authors show how food can be construed as loving care, and using practice theory, a theoretical framework is developed that can explain the transitions and how the family negotiates the stages from independence to dependence.

Literature from across the social sciences and research evidence are used to highlight interdisciplinary and intersectional research approaches to food and family. Responsibilisation emerges as an important thematic thread, as family has (compared with the state and corporations) been increasingly made responsible for its members’ health and diet.

Three questions are addressed: first, to what extent food is fundamentally social, and integral to family identity, as reflected in the sociology of food; second, how debates about families and food are embedded in global, political and market systems; and third, how food work and caring became constructed as gendered.

Interest in food can be traced back to early explorations of class, political economy, the development of commodity culture and gender relations. Research across the social sciences and humanities draws on concepts that are implicitly sociological. Food production, mortality and dietary patterns are inextricably linked to the economic/social organisation of capitalist societies, including its gender-based divisions of domestic labour. DeVault’s (1991) groundbreaking work reveals the physical and emotional work of providing/feeding families, and highlights both its class and gendered dimensions. Family mealtime practices have come to play a key role in the emotional reinforcement of the idea of the nuclear family.

This study highlights the imperative to take pluri-disciplinary and intersectional approaches to researching food and family. In addition, this paper emphasises that feeding the family is an inherently political, moral, ethical, social and emotional process, frequently associated with gendered constructions.

The purpose of this paper is to examine the workplace experiences of women employees during maternity and post-maternity periods to reveal the institutional order that coordinated the social relations and shaped their experiences through local and extra-local texts.

The institutional ethnography research framework allowed for mapping of workplace experiences of women employees during their maternity and post-maternity periods in their local context, connecting them to the invisible extra-local social relations.

The research study explored the disjuncture between the gender diversity initiatives that aimed at the inclusion of women employees and the workplace experiences of women employees in terms of work disengagement and work role degradation, including career discontinuity.

The gender diversity and inclusion initiatives of an organization need to examine the local and extra-local institutional texts that govern their context and coordinate social relations, such that there is no inconsistency between the intentions, implementation and outcomes.

The state needs to revisit the maternity benefit act to provide additional measures to protect the career continuity of women, who choose maternity at some point in their work lives.

The paper explored the institutional order that influences the career continuity of women employees during maternity and post-maternity periods using institutional ethnography research framework in an information technology services organization in India. No such research study has even been attempted.

The purpose of this paper is to propose a new tool for stock investment risk management through studying stocks with what kind of characteristics can be predicted by individual investor behavior.

Based on comment data of individual stock from the Snowball, a thermal optimal path method is employed to analyze the lead–lag relationship between investor attention (IA) and the stock price. And machine learning algorithms, including SVM and BP neural network, are used to predict the prices of certain kind of stock.

It turns out that the lead–lag relationships between IA and the stock price change dynamically. Forecasting based on investor behavior is more accurate only when the IA of the stock is stably leading its price change most of the time.

One limitation of this paper is that it studies China’s stock market only; however, different conclusions could be drawn for other financial markets or mature stock markets.

As for the implications, the new tool could improve the prediction accuracy of the model, thus have practical significance for stock selection and dynamic portfolio management.

This paper is one of the first few research works that introduce individual investor data into portfolio risk management. The new tool put forward in this study can capture the dynamic interplay between IA and stock price change, which help investors identify and control the risk of their portfolios.