Search results

This paper aims to detail the reactive flow simulations of a LOX/CH4 multi-element rocket engine. The work has been conducted within the framework of the HYPROB-BREAD project whose main objective is the design, manufacture and testing of a LOX/LCH4 regeneratively cooled ground demonstrator.

Numerical simulations have been carried out with both commercial software and CIRA software developed in house. Two sets of boundary conditions, nominal and experimental, have been applied from which a code-to-code validation has been effected with the former and a code-to-experiment validation with the latter.

The results presented include both flow data and heat fluxes as well as parameters associated with engine performance, and indicate an excellent agreement with experimental data of a LOX/CH4 multi-element rocket engine.

The research is unique as the CIRA code Numerical Experimental Tool (NExT) has been validated with the commercial software FLUENT as well as with experimental values from the firing of the LOX/CH4 rocket engine demonstrator.

This chapter conducts a systematic comparison of behavioral economics’s challenges to the standard accounts of economic behaviors within three dimensions: under risk, over time, and regarding other people. A new perspective on two underlying methodological issues, i.e., inter-disciplinarity and the positive/normative distinction, is proposed by following the entanglement thesis of Hilary Putnam, Vivian Walsh, and Amartya Sen. This thesis holds that facts, values, and conventions have inter-dependent meanings in science which can be understood by scrutinizing formal and ordinary language uses. The goal is to provide a broad and self-contained picture of how behavioral economics is changing the mainstream of economics.

The new frontier: Go East, young man. Go East. Searching for business opportunities in Eastern Europe. In the March issue of The Intelligent Enterprise, John Ainslie predicts that the 90s will be a decade of disaster for the new democracies of Eastern Europe. The fledgling governments could be hit by up to 50 million Soviet economic refugees, according to Czech President Vaclav Havel, and Ainslie wonders if their fragile economies will be able to handle the strain.

Publishing and printing have travelled a very long way in the last 150 years. There had been no basic changes in the working of the printing press between its first inception and the early nineteenth century. In those days each letter was both cast and set by hand. The maximum speed of an expert founder was about six letters per minute. This works out at more than half a day's work for a page.

States that community development has been promoted as a process, a method, a programme, a movement and a paradigm, but that efforts at definition tend to divert attention from the key concern in this field: what kinds of organizations are most effective in actually doing community development? Posits that the main determinants of what is done in society today are laid down by governments and large corporations; these organizations cannot give people a sense of identity and purpose beyond the job and the daily round of work. Proposes that mediating structures can do so. Reveals that these are organizations which stand between the individuals and the larger entities of society. Examines, using Cape Breton Island as context, a potential role for the university as a mediating structure in community development.

This work addresses how consumer perceptions of quality may be influenced by the composition of competition. I develop a theoretical framework that explains how consumer evaluations of quality can be negatively impacted by a product's stylistic similarity to popular competitors. These issues are examined empirically using more than 75,000 online consumer evaluations, from the evaluation aggregator Rotten Tomatoes, of 123 feature films released in the United States during 2007. Results suggest that during a movie's opening week, movies that are stylistically similar to the top-performing box office movie are evaluated less favorably. Additional analyses indicate that this negative effect may persist in later periods due to social conformity pressures, and that there is reduced demand for those movies that are stylistically similar to the top box office performer. This article contributes to the broader literature in strategic management by depicting how stylistic features of competitors can affect consumer behaviour and perceptions of quality in markets. This work also suggests managerial implications for entry-timing decisions and positioning choices.

In this chapter, we argue that despite the fact that empirical research on trait neuroticism has shown fairly weak relations between the broad neuroticism trait and overall job performance, organizational research can benefit by increased attention to the neuroticism construct. This is because the influence of neuroticism on work behavior can be best understood by separating the more general neuroticism domain into its lower level facets. We discuss various conceptualizations of neuroticism and then review existing research on the relation between the facets of neuroticism and job performance. Next, we turn our attention to a theoretical framework that suggests that the relations between neuroticism facets and job performance outcomes are explained by the social, cognitive, and behavioral effects of having varying levels of neuroticism-based traits. In so doing, we not only focus on mediated relationships between facets of neuroticism and job performance dimensions but also recognize some important moderators, as well as some expected direct relations between the facets and job performance. Finally, we discuss implications for further conceptual development, offer some suggestions for testing the propositions, and discuss potential practical implications of finding support for this model.

This study investigates whether broad-based employee ownership (BBEO), in isolation and in conjunction with cash profit sharing (CPS), can enhance labor productivity in family firms over nonfamily firms.

Hypothesis testing was conducted using cross-sectional time-series regression with a matched sample of 393 family and nonfamily firms listed on the US S&P 500 over a five-year timeframe.

Overall, the findings indicate that BBEO does not increase labor productivity more in family firms compared to nonfamily firms in the short term; however, BBEO does enable family firms to experience greater labor productivity relative to nonfamily firms beyond the short term. Moreover, when BBEO is combined with CPS, labor productivity improves more for family firms than nonfamily firms both in the short term and beyond.

While prior studies have relied largely on agency theory, this study contributes to the literature on family firms and employee incentives by being amongst the first to draw upon temporal motivation theory to distinguish between family and nonfamily firms regarding the incentive effect of BBEO on labor productivity.

The purpose of this paper is twofold. First, it brings forth a methodology of “traces” for organizational ethnography of the shadow, also understood as the realm of the repressed. Second, it highlights the emotional disconnect that organizational ethnographers encounter in traumatized communities and provides suggestions to bridge them.

The paper – drawing on autoethnography – incorporates the author’s fieldwork experiences conducted with market women in postconflict Monrovia, Liberia. In the tradition of “confessional tales,” it includes vignettes from fieldnotes and in-depth qualitative interviews.

The paper highlights three types of traces for research on the shadow: memorial, interactional, and material.

The paper is important because it provides a methodology to recover information pertaining to the organizational shadow, where silence, absence, and suppression dominate. It extends existing literature focused on visuality to consider alternative and holistic epistemologies in line with African worldviews.

This paper will help practitioners working with traumatized communities as it suggests the use of memory as a more indirect route to recover information rather than direct questioning.

The paper juxtaposes poignant stories with academic prose and is valuable in terms of content and form. First, it addresses the topics of emotion and discomfort, seldom incorporated in organization studies. Second, it is valuable to scholars wishing to experiment with more intuitive forms of writing.