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The stress analysis of structures subjected to cyclic loading requires stress—strain relations simple enough to be usable efficiently in computer program and yet adequate to describe the essential features of the plastic behaviour of the material reasonably well. The constitutive equation for cyclic plasticity incorporating the motion of the centre of the loading surface is proposed. Using the modified plastic work, the dependency of the loading history of materials is taken into account. The Ramberg—Osgood law which is applied to each stress—strain loop from the current centre of the loading surface plays an important role. This computer simulation for stress—strain relation of cyclic loading is justified from the point of view of several kinds of experiments on type 304 austenitic stainless steel.

The purpose of this paper is to develop a mathematical solution to estimate the deformation pattern and required power in cold plate rolling using coupled stream function method and upper bound theorem.

In the first place, an admissible velocity field and the geometry of deformation zone are derived from a new stream function. Then, the optimum velocity field is obtained by minimizing the corresponding power function. Also, to calculate the adiabatic heating during high speed rolling operations, a two-dimensional conduction-convection problem is sequentially coupled with the mechanical model. To verify the predictions, rolling experiments on aluminum plates are conducted and also, a finite element analysis is performed by Abaqus/Explicit. The predicted deformation zone is then compared with the experimentally measured region as well as with the results of the finite element analysis.

The results show that the predicted deformation zone and the temperature distribution fit reasonably with the experimental data while much lower computational cost needs comparing to the fully finite element analysis.

A new stream function is proposed to properly describe the velocity field and deformation pattern during plate rolling considering the neutral point. Furthermore, the employed algorithm can be simply coupled with the thermal finite element analysis.

Narrow, managerially centered notions of organizational culture remain hegemonic, marginalizing richer, anthropological approaches as well as efforts to understand how the beliefs and practices of organizations are fundamentally shaped by the wider societal dynamics within which they are embedded. In this paper, the authors draw upon recent efforts to explore the interface of scholarship on practice and the institutional logics perspective to highlight the utility of a practice-driven institutional approach to the study of organizational culture that brings society back in. Empirically, the authors present a longitudinal case study of a Chinese private enterprise, and analyze how the unfolding dynamics of a strong community logic increasingly affected by a rising market logic, shaped the formation of political coalitions internally and externally as organizational members aimed to maintain truces between the push and pull of logics over a period of 22 years. Through an analysis of seven episodes that we conceptualize as “cultural encounters,” the authors find that a combination of compartmentalization and overall integration of logics contributes to provisional truces, and that people in the same cohort who share common geographic socialization are more likely to form allies. Our aim is to encourage future scholars to study how societal beliefs and practices work their way into organizations in a variety of explicit as well as more mundane, hidden ways.

This paper offers new conversations on entrepreneurial ecosystems as contested communities through a critique of extant work that relies uncritically on social capital. It offers new directions for theorizing and studying entrepreneurial ecosystems guided by a critical perspective of social capital (i.e., arriving from several intellectual traditions including political economy, intersectionality, critical race theory, and feminisms). In doing so, the paper offers insights around how continued structural and relational inequalities based on gender, race and/or immigrant status within the domain of entrepreneurship can be brought to the forefront of ecosystem frameworks. Doing so produces new approaches to the conceptualization and study of entrepreneurial ecosystems as more than sites of economic activity between and among actors, but rather it allows for consideration of how being differentially embedded in social structures matters for entrepreneurship. Differences in social structures within ecosystems reflect broader societal patterns and analyzing them can yield insights about the configuration of institutions. To understand the complexity of how different institutional configurations may lead to different forms of entrepreneurial ecosystems, it is necessary to have different conceptual starting points on social capital (informal) and exchange relationships (formal) as foundational aspects of entrepreneurial activities. Consequently, the paper provides these new analytic starting points, thus providing better explanatory and empirical power to demonstrate how and why inequalities persist in entrepreneurship.

In our 1983 paper, McKelvey and I (McKelvey & Aldrich, 1983) took the field of “organization science” to task for not paying sufficient attention to the scope conditions under which research findings are valid. (Today I would argue that the field also had not paid sufficient attention to matching theoretical ambitions with research designs.) We argued that the field fell short on three critical criteria: classifiability, generalizability, and predictability. We noted that samples of organizations were so poorly described that classifying them was impossible, that generalizations were being carelessly drawn, and that the predictive power of most theories was extremely weak.

This paper gives a review of the finite element techniques (FE) applied in the area of material processing. The latest trends in metal forming, non‐metal forming, powder metallurgy and composite material processing are briefly discussed. The range of applications of finite elements on these subjects is extremely wide and cannot be presented in a single paper; therefore the aim of the paper is to give FE researchers/users only an encyclopaedic view of the different possibilities that exist today in the various fields mentioned above. An appendix included at the end of the paper presents a bibliography on finite element applications in material processing for 1994‐1996, where 1,370 references are listed. This bibliography is an updating of the paper written by Brannberg and Mackerle which has been published in Engineering Computations, Vol. 11 No. 5, 1994, pp. 413‐55.

This chapter explores how network bricolage, as a form of collective entrepreneurship, develops over time and influences the shape and form of an organization. Using a historical organization study of SEUR, a Spanish courier company founded in 1942, the authors show how network bricolage is implemented as a dynamic process of collaborative efforts between bricoleurs who draw on their historical experience to build and develop an organization. Our study offers two main contributions. In combining network bricolage with ideas of collective entrepreneurship, the authors first extend knowledge about the practice of bricolage and the role of the bricoleur in the entrepreneurial context beyond start-up. Second, the authors show that, while entrepreneurs’ decisions are historically contingent, it is how entrepreneurs wed past experience with current context which informs their actions in the present, shaping the enterprise for the future.

Ian Popperwell asks why mental health services have been so slow to address social exclusion and whether, indeed, mental health practitioners should be involved in promoting social inclusion at all.

Purpose – Drawing from social psychology and economics, I propose several mechanisms that may affect ownership stakes among entrepreneurs, including norms of distributive justice, negotiation constraints, and network constraints. The processes are explored empirically for a representative dataset of entrepreneurial teams.

Methodology/Approach – Between 1998 and 2000, entrepreneurial teams were sampled from the U.S. population for the Panel Study of Entrepreneurial Dynamics. I analyze the distribution of ownership stakes at both the individual and group levels.

Findings – The results suggest that principles of macrojustice, affecting the distribution of resources in teams as a whole, deviate considerably from principles of microjustice, affecting the resources received by individual entrepreneurs. While aggregate inequality increases in teams that have a diverse set of members, the effect is not reducible to discrimination on the basis of individual status characteristics. Instead, the relational demography of teams – characterized in terms of the degree of closeness in network ties and homogeneity in demographic attributes – serves as a uniquely social predictor of between-group variation in economic inequality.

Originality/Value of the paper – Empirical research on inequality has paid little attention to the process of group exchange in organizational start-ups, where entrepreneurs pool resources and skills in return for uncertain or indirect payoffs. This paper offers both theoretical frameworks and empirical analyses to shed light on economic inequality among entrepreneurs.

Walter Lippmann is widely acknowledged as the Father of modern American Journalism and one of the most profound public thinkers of the twentieth century. Though he extensively corresponded with economists, political philosophers, political scientists, and statesmen on both sides of the Atlantic, Lippmann’s interest in political economy has only come under serious academic investigation within the last 20 years. When Lippmann has been explored in the history of economic thought, he has generally been considered to be a propagator and popularizer of others’ ideas rather than a serious theorist in his own right, particularly his role in spreading Keynesianism as one of the early supporters of the New Deal. This chapter directly challenges this dominant interpretation on two fronts. First, it acknowledges and explores Lippmann’s role as a contributor to the economic discourse of his time. Second, it challenges categorizing Lippmann as a Keynesian by highlighting the closeness of many of his ideas to the Austrian school of thought. It accomplishes this by giving a holistic view of Lippmann’s thought, not only in the Great Depression and New Deal Era, but how he evolved from a student sympathetic to socialism at Harvard in 1910 to a theorist concerned with epistemological problems of good political, social, and economic order. The development of Lippmann’s thought in this broader lens parallels much of the work of Hayek, Mises, and others during this period, and presents rich new research opportunities for both modern Austrian economists as well as historians of economic thought.