The role of auxiliaries in the immersion dyeing of textile fibres: Part 3 theoretical model to describe the role of inorganic electrolytes used in dyeing cellulosic fibres with direct dyes

The second chapter covers the main characteristics of transition time in the four countries: Italy, Greece, Spain, and Portugal. After developing the theoretical model on paths of transition, with a focus on social movement participation, the chapter looks at social movements and protest events as turning points during transition, covering in particular the specific movement actors, their organizational models, and their repertoires of action and frames. The chapter focuses on two dimensions: the role of mobilization in the transition period, which implies the analysis of how elites and masses interact, ally, or fight with each other in the process, and the outcome of transitions as continuity versus rupture of the democratic regime vis-à-vis the old one. It concludes by elaborating some hypotheses on how different modes of transition may produce different types and uses of (transition) memories.

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Triggering avalanches by transverse perturbations in a rotating drum

Scientific Reports ◽

10.1038/s41598-021-93422-2 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Vicente Salinas ◽

Cristóbal Quiñinao ◽

Sebastián González ◽

Gustavo Castillo

Keyword(s):

Hopf Bifurcation ◽

Theoretical Model ◽

Order Parameter ◽

Small Scale ◽

Rotating Drum ◽

Governing Parameter ◽

Stick Slip ◽

Slip Regime ◽

Axis Of Rotation

AbstractWe study the role of small-scale perturbations in the onset of avalanches in a rotating drum in the stick-slip regime. By vibrating the system along the axis of rotation with an amplitude orders of magnitude smaller than the particles’ diameter, we found that the order parameter that properly describes the system is the kinetic energy. We also show that, for high enough frequencies, the onset of the avalanche is determined by the amplitude of the oscillation, contrary to previous studies that showed that either acceleration or velocity was the governing parameter. Finally, we present a theoretical model that explains the transition between the continuous and discrete avalanche regimes as a supercritical Hopf bifurcation.

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The Internationalization of Family Firms

Family Business Review ◽

10.1177/0894486513491423 ◽

2013 ◽

Vol 27 (2) ◽

pp. 103-125 ◽

Cited By ~ 159

Author(s):

Thilo J. Pukall ◽

Andrea Calabrò

Keyword(s):

Theoretical Model ◽

Family Firms ◽

Future Research ◽

Risk Attitudes ◽

Journal Articles ◽

Suggested Model ◽

Socioemotional Wealth ◽

Uppsala Model ◽

Research Themes

This article systematically reviews and critically examines 72 journal articles published (from 1980 to 2012) on the internationalization of family firms. Stemming from existing literature, core aspects and main gaps are identified. We aim to overcome the inconclusiveness of findings of previous research by offering an integrative theoretical model integrating the concept of socioemotional wealth with the revised Uppsala model. Our framework helps understand behaviors of internationalizing family firms by focusing on when and how they internationalize, especially related to risk attitudes, the role of knowledge and networks. Ultimately, we provide future research themes flowing from our suggested model.

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