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Ideally, there is no wear in hydrodynamic lubrication regime. A small amount of wear occurs during start and stop of the machines and the amount of wear is so small that it is difficult to measure with accuracy. Various wear measuring techniques have been used where out-of-roundness was found to be the most reliable method of measuring small wear quantities in journal bearings. This technique was further developed to achieve higher accuracy in measuring small wear quantities. The method proved to be reliable as well as inexpensive. The paper aims to discuss these issues.

In an experimental study, the effect of antiwear additives was studied on journal bearings lubricated with oil containing solid contaminants. The test duration was too long and the wear quantities achieved were too small. To minimise the test duration, short tests of about 90 min duration were conducted and wear was measured recording changes in variety of parameters related to weight, geometry and wear debris. The out-of-roundness was found to be the most effective method. This method was further refined by enlarging the out-of-roundness traces on a photocopier. The method was proved to be reliable and inexpensive.

Study revealed that the most commonly used wear measurement techniques such as weight loss, roughness changes and change in particle count were not adequate for measuring small wear quantities in journal bearings. Out-of-roundness method with some refinements was found to be one of the most reliable methods for measuring small wear quantities in journal bearings working in hydrodynamic lubrication regime. By enlarging the out-of-roundness traces and determining the worn area of the bearing cross-section, weight loss in bearings was calculated, which was repeatable and reliable.

This research is a basic in nature where a rudimentary solution has been developed for measuring small wear quantities in rotary devices such as journal bearings. The method requires enlarging traces on a photocopier and determining the shape of the worn area on an out-of-roundness trace on a transparency, which is a simple but a crude method. This may require an automated procedure to determine the weight loss from the out-of-roundness traces directly. This method can be very useful in reducing test duration and measuring wear quantities with higher precision in situations where wear quantities are very small.

This research provides a reliable method of measuring wear of circular geometry. The Talyrond equipment used for measuring the change in out-of-roundness due to wear of bearings indicates that this equipment has high potential to be used as a wear measuring device also. Measurement of weight loss from the traces is an enhanced capability of this equipment and this research may lead to the development of a modified version of Talyrond type of equipment for wear measurements in circular machine components.

Wear measurement in hydrodynamic bearings requires long duration tests to achieve adequate wear quantities. Out-of-roundness is one of the geometrical parameters that changes with progression of wear in a circular shape components. Thus, out-of-roundness is found to be an effective wear measuring parameter that relates to change in geometry. Method of increasing the sensitivity and enlargement of out-of-roundness traces is original work through which area of worn cross-section can be determined and weight loss can be derived for materials of known density with higher precision.

The purpose of this paper is to consider how biophilic urbanism complements and potentially enhances approaches for the built environment profession to holistically integrate nature into cities. Urban nature – also referred to as urban greening and green infrastructure – has increasingly been considered from many perspectives to address challenges such as population pressures, climate change and resource shortages. Within this context, the authors highlight how “biophilic urbanism” complements and may enhance approaches and efforts for urban greening.

The paper provides a review of existing literature in “urban nature” to clarify and discuss the concept of biophilic urbanism. Drawing on this literature review, the authors present a systematic clustering and scaling of “biophilic elements” that could facilitate responding to twenty-first century challenges.

Biophilic urbanism can be applied at multiple scales in urban environments, through a range of multi-functional features that address the pervasive false dichotomy of urban development and environmental protection. Biophilic urbanism can complement urban greening efforts to enable a holistic approach, which is conducive to comprehensive, intentional and strategic urban greening.

This paper situates the emerging concept of biophilic urbanism within existing research from multiple disciplines, providing insight for how this can be applied in practice, particularly to the topical challenge of “urban renewal”.

The purpose of this paper is to describe how teachers’ generational interpretative frameworks influence their career experiences and to demonstrate how these generational differences impact the power of professional capital to improve teaching and learning.

The paper utilizes data from a multi-year, mixed methods study of mid-career teachers in Massachusetts. Data in this paper come from semi-structured interviews with 12 Generation X teachers (born 1961-1980).

Generation X teachers have a unique self-image, self-esteem, task perception, job motivation, and future perspective that form their generational interpretative framework. This framework is different from that of the prior generation.

These generational differences have implications for how Generation X teachers view professionalism and autonomy and how they see their careers over time. Drawing upon Hargreaves and Fullan’s (2012) suggestions for school leaders, three implications are highlighted. First, a model of professional capital that incorporates teachers’ generational differences must be aware of how teachers view their work before engaging in changing it. This implication ties directly into the second, which is that leaders must know their teachers and understand the culture in which they work. Together, these two implications suggest that implementing a model of professional capital is not enough; it must begin with deliberate thought as to who the teachers are who are being asked to change. Finally, to secure leadership stability and sustainability, leaders must respect generational differences that influence teachers’ desires to move, or not move, into formal leadership roles.

The purpose of this paper is to cover a 10-year period in ten of Ontario’s 72 school districts on the nature, origins and importance of “leading from the middle” (LfM) within and across the districts.

The research uses a self-selected but also representative sample of ten Ontario school districts. It undertook three-day site visits in each of the districts, transcribed all the interviews and compiled an analysis into detailed case studies.

LfM is defined by a philosophy, structure and culture that promotes collaboration, initiative and responsiveness to the needs of each district along with collective responsibility for all students’ success.

To be sustainable in Ontario, LfM needs support and resourcing from the top. The current environment of economic austerity therefore threatens sustainability. Globally, examples of LfM are emerging in at least three other systems. The analysis does not have identical questions or respondents in phases 1 and 2. Ontario’s version of LfM may differ from others. The collaborative design may downplay criticisms of LfM.

LfM provides a clear design for leading in complex times. Compared to top-down leadership the whole system can address the whole of students’ learning and well-being. LfM is suited to systems and cultures that support local democracy, community responsiveness and professional empowerment and engagement.

LfM is an inclusive, democratic and professionally empowering and responsive process that differs from other middle level strategies which treat the middle merely as a way of connecting the top and bottom to get government policies implemented more efficiently and coherently.

Since the turn of the new millennia, governments have increasingly moved away from professional models of educational decision-making and turned toward a neoliberal production model in which markets and test scores drive educational decisions. In this “brave new world,” teachers have become “human capital,” and principals, the managers of their productivity rather than leaders of learning. As a result of this changing dynamic, teachers have increasingly turned to teacher unions or federations, and away from local school jurisdictions and governments to protect their salaries, working conditions and professionalism. Principals, in turn, have found themselves in a no-win situation – caught between top-down demands from big governments and local school districts for teacher compliance, and big unions' insistence on fair treatment for all teachers. This chapter, therefore, intends to explore this increasingly fragile role of principals in three international settings, in our rapidly changing world.

The purpose of this paper is to present findings from an initial year of mentoring and induction provided to new assistant principals (APs) served by the Kansas Educational Leadership Institute (KELI) and to identify program characteristics that support leadership development for first year APs.

The current research utilized surveys and interviews for data collection. The participants included 12 new AP mentees and five mentors currently participating in the KELI program. Two comparable questionnaires are designed to examine perceptions of both groups on the effectiveness of the program in general, mentoring/induction approaches used, and the appropriateness of the intensity of engagement required. The semi-structured interviews provide contextualized understanding of the same aspects examined in the surveys.

The findings reveal that mentees found mentoring/induction experiences with KELI highly valuable. The mentor-mentee matching mechanism together with other structured components in the KELI program such as mentor coaching training and multiple professional learning opportunities was instrumental for promoting a trustful relationship, reciprocal learning, and personalized and growth-based assistance that are key to successful mentoring/induction experiences.

The study findings will inform the research-based requirements in KELI’s model and further define effective components in serving the unique and varied responsibilities inherent in the AP position.

There is a need to identify elements in effective mentoring and induction support for new APs and to encapsulate best practices to further develop skills and dispositions for this important leadership position.

The chapters in this volume focus on how university partnerships for pre-service and teacher development apply novel ideas to improve teacher quality in global communities. The purpose of these programs is to improve education systems for all participants. Case studies in this volume present a broad and in-depth review of partnerships that apply novel ideas to transform organizations. This chapter provides an overview to this volume by discussing important elements of teacher quality by defining teacher quality characteristics, shared collaboration, and providing ideas for professional development agendas.

Teachers leave the profession for various reasons, such as inadequate pay, work demands, and lack of support from their administrative leaders. Hargreaves (2004) attributed the growing teacher burnout phenomenon to accountability pressures in the forms of high-stakes testing and increasing work demands. This stress can result in teacher's low self-efficacy and the perception of workplace alienation. Seyfarth (2008) described an alienated teacher with the “feeling that one's work is meaningless and that one is powerless to bring about change” (p. 198). Administrative leadership can further inhibit a teacher's professional growth by failing to meet the teacher's needs with respect to instructional coaching and lacking opportunities for professional self-reflection.

This chapter explores the contribution of the work of Len Barton to the evolving inclusive education discourse; in particular his 1986 article, The Politics of Special Educational Needs. In this article, he discusses the influence of a sociological lens to problematize the current special education policy, practices, and inquiry. The future directions piece at the end of the article called for teacher awareness of the relationship between the personal and political. I felt I was a living, breathing example of the teacher who Len Barton was talking about. I chose this article because of its particular pertinence to my continuing understandings about the phenomenon of special education and subsequently my research with teachers of students with profound and multiple learning difficulties.