Vibrational method of cleaning of surfaces from homogeneous waste materials

Cleaning of contaminated surfaces is closely related to the study of adhesion forces between particles and the surface. Despite numerous technological advancements, the adhesion of particles and surfaces is a phenomenon that is far from being fully understood. This is due to many factors acting during process, - such as the surface roughness and material type, size, shape, electrostatic properties of particles, etc. A surface cleaning device based on nonlinear vibration of the contact element is presented in this paper. Relationships describing the periodic motion in steady state operating regimes are obtained. Characteristics of motion as functions of the frequency of excitation are investigated. Experimental investigations were performed for the determination of the influence of the cleaning velocity on the vibration frequency. It is shown that this dependence is directly related to adhesion forces between particles and the surface. Test results are in good accordance with theoretical predictions

Anchors aweigh: the sources, variety, and challenges of mission drift

The growing number of studies which reference the concept of mission drift imply that such drift is an undesirable strategic outcome related to inconsistent organizational action, yet beyond such references little is known about how mission drift occurs, how it impacts organizations, and how organizations should respond. Existing management theory more broadly offers initial albeit equivocal insight for understanding mission drift. On the one hand, prior studies have argued that inconsistent or divergent action can lead to weakened stakeholder commitment and reputational damage. On the other hand, scholars have suggested that because environments are complex and dynamic, such action is necessary for ensuring organizational adaptation and thus survival. In this study, we offer a theory of mission drift that unpacks its origin, clarifies its variety, and specifies how organizations might respond to external perceptions of mission drift. The resulting conceptual model addresses the aforementioned theoretical tension and offers novel insight into the relationship between organizational actions and identity

A tale of two towns: A comparative study exploring the possibilities and pitfalls of social capital among people seeking recovery from substance misuse

Background: Social capital has become an influential concept in debating and understanding the modern world. Within the drug and alcohol sector, the concept of ‘recovery capital’ has gained traction with researchers suggesting that people who have access to such capital are better placed to overcome their substance use-related problems than those who do not (Cloud and Granfield, 2008), leading to requests for interventions that focus on building social capital networks (Neale & Stevenson, 2015). While accepting that the concept of social capital has enormous potential for addressing the problems associated with drug use, this paper also considers its ‘dark side’. Methods: Data were drawn from semi-structured interviews with 180 participants including 135 people who use drugs and 45 people who formerly used drugs. Results: High levels of trust, acquired through the establishment of dense social networks, are required to initiate recovery. However, these ‘strong bonds’ may also lead to the emergence of what is perceived by others as an exclusive social network that limits membership to those who qualify and abide by the ‘rules’ of the recovery community, particularly around continuous abstinence. Conclusions: Depending on the nature of the networks and the types of links participants have into them being socially connected can both inhibit and encourage recovery. Therefore, the successful application of social capital within the drugs and alcohol field requires a consideration of not only the presence or absence of social connections but their nature, the value they produce, and the social contexts within which they are developed

Chapter 10 Scholarly Practice and Meaningful Research: Utilising Voice by Enabling Action … If it was Only that Simple!

The growing importance of ‘lived practices’ in entrepreneurship-related studies has sought to pose several questions and challenges for researchers/scholars in the field (Ruona & Gilley, 2009; Short, Keefer, & Stone, 2009). The issue of how current entrepreneurship research practices can become more applied in nature provides the basis for articulating more clearly what we mean by research impact and why it has become a central concern in the research field (Beyer & Trice, 1982; Huggins et al., 2008; Rynes, 2007; Starkey & Tempest, 2005). This debate has drawn specific attention to the need for applied research in entrepreneurial scholarship, which is more reflective of lived practice. The need to reach a balance between practitioners and academics’ expectations in terms of delivering research which is focussed towards achieving academic rigour and application to practice, which is both meaningful and relatable, is significant for both communities (Ram, Edwards, Jones, Kiselinchev, & Muchenje, 2014). This chapter seeks to assist and inspire both existing and future researchers in the field to make more informed choices and offer tangible evidence of good practice, serving as a guide to researchers wishing to develop engaged research.The authors hope that the nature of this chapter would seek to clarify the importance of engaged research in supporting how we understand and respond to the needs of entrepreneurial practice as a means of building trust and confidence in research reported. A key characteristic of the issue will be the different ‘framing’ of questions that can enhance practical knowledge